32 results on '"A., Bagulya"'
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2. Simulation of Bragg Curves Produced by Protons, Alpha-Particles, and Carbon Ions in Water.
- Author
-
Bagulya, A. V., Grichine, V. M., Ryabov, V. A., and Zavestovskaya, I. N.
- Abstract
Bragg curves for protons, alpha-particles, and carbon ions in water are calculated using the Geant4 software package. The calculation results, which are of interest for practical applications in proton and ion therapy, are compared with experimental data in terms of the reduced values of χ
2 . The best result is obtained within the framework of the QBBC-opt_0 physical list, which is not optimized for medical applications. It is concluded that the accuracy of a patient's radiation planning can be improved by developing alternative models of ionization of slow particles in biomaterials. A specific model is proposed, the development of which will help solve this problem. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
3. The SHiP experiment at the proposed CERN SPS Beam Dump Facility
- Author
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Ahdida, C., Akmete, A., Albanese, R., Alt, J., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Baaltasar Dos Santos, F., Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Berdnikov, A. Y., Berdnikov, Y. A., Betancourt, C., Bezshyiko, I., Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, I., Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, Richard, Breton, D., Brignoli, A., Buescher, V., Buonaura, A., Buontempo, S., Cadeddu, S., Calviani, M., Campanelli, M., Casolino, M., Charitonidis, N., Chau, P., Chauveau, J., Chepurnov, A., Chernyavskiy, M., Choi, K. -Y, Chumakov, A., Climescu, M., Conaboy, A., Congedo, L., Cornelis, K., Cristinziani, M., Crupano, A., Dallavalle, G. M., Datwyler, A., D'Ambrosio, N., D'Appollonio, G., de Asmundis, R., De Carvalho Saraiva, J., De Lellis, G., de Magistris, M., De Roeck, A., De Serio, M., De Simone, D., Dedenko, L., Dergachev, P., Di Crescenzo, A., Di Giulio, L., Dib, C., Dijkstra, H., Dmitrenko, V., Dougherty, L. A., Dolmatov, A., Donskov, S., Drohan, V., Dubreuil, A., Durhan, O., Ehlert, M., Elikkaya, E., Enik, T., Etenko, A., Fedin, O., Fedotovs, F., Ferrillo, M., Ferro-Luzzi, M., Filippov, K., Fini, R. A., Fischer, H., Fonte, P., Franco, C., Fraser, M., Fresa, R., Froeschl, R., Fukuda, T., Galati, G., Gall, J., Gatignon, L., Gavrilov, G., Gentile, V., Goddard, B., Golinka-Bezshyyko, L., Golovatiuk, A., Golovtsov, V., Golubkov, D., Golutvin, A., Gorbounov, P., Gorbunov, D., Gorbunov, S., Gorkavenko, V., Gorshenkov, M., Grachev, V., Grandchamp, A. L., Graverini, E., Grenard, J. -L, Grenier, D., Grichine, V., Gruzinskii, N., Guler, A. M., Guz, Yu., Haefeli, G. J., Hagner, C., Hakobyan, H., Harris, I. W., van Herwijnen, E., Hessler, C., Hollnagel, A., Hosseini, B., Hushchyn, M., Iaselli, G., Iuliano, A., Jacobsson, R., Jokovic, D., Jonker, M., Kadenko, I., Kain, V., Kaiser, B., Kamiscioglu, C., Karpenkov, D., Kershaw, K., Khabibullin, M., Khalikov, E., Khaustov, G., Khoriauli, G., Khotyantsev, A., Kim, Y. G., Kim, V., Kitagawa, N., Ko, J. -W, Kodama, K., Kolesnikov, A., Kolev, D. I., Kolosov, V., Komatsu, M., Kono, A., Konovalova, N., Kormannshaus, S., Korol, I., Korol'ko, I., Korzenev, A., Koukovini Platia, E., Kovalenko, S., Krasilnikova, I., Kudenko, Y., Kurbatov, E., Kurbatov, P., Kurochka, V., Kuznetsova, E., Lacker, H. M., Lamont, M., Lantwin, O., Lauria, A., Lee, K. S., Lee, K. Y., Leonardo, N., Levy, J. -M, Loschiavo, V. P., Lopes, L., Lopez Sola, E., Lyons, F., Lyubovitskij, V., Maalmi, J., Magnan, A. -M, Maleev, V., Malinin, A., Manabe, Y., Managadze, A. K., Manfredi, M., Marsh, S., Marshall, A. M., Mefodev, A., Mermod, P., Miano, A., Mikado, S., Mikhaylov, Yu., Mikulenko, A., Milstead, D. A., Mineev, O., Montesi, M. C., Morishima, K., Movchan, S., Muttoni, Y., Naganawa, N., Nakamura, M., Nakano, T., Nasybulin, S., Ninin, P., Nishio, A., Obinyakov, B., Ogawa, S., Okateva, N., Osborne, J., Ovchynnikov, M., Owtscharenko, N., Owen, P. H., Pacholek, P., Park, B. D., Pastore, A., Patel, M., Pereyma, D., Perillo-Marcone, A., Petkov, G. L., Petridis, K., Petrov, A., Podgrudkov, D., Poliakov, V., Polukhina, N., Prieto Prieto, J., Prokudin, M., Prota, A., Quercia, A., Rademakers, A., Rakai, A., Ratnikov, F., Rawlings, T., Redi, F., Reghunath, A., Ricciardi, S., Rinaldesi, M., Rodin, Volodymyr, Rodin, Viktor, Robbe, P., Rodrigues Cavalcante, A. B., Roganova, T., Rokujo, H., Rosa, G., Ruchayskiy, O., Ruf, T., Samoylenko, V., Samsonov, V., Sanchez Galan, F., Santos Diaz, P., Sanz Ull, A., Sato, O., Savchenko, E. S., Schliwinski, J. S., Schmidt-Parzefall, W., Schumann, M., Serra, N., Sgobba, S., Shadura, O., Shakin, A., Shaposhnikov, M., Shatalov, P., Shchedrina, T., Shchutska, L., Shevchenko, V., Shibuya, H., Shihora, L., Shirobokov, S., Shustov, A., Silverstein, S. B., Simone, S., Simoniello, R., Skorokhvatov, M., Smirnov, S., Soares, G., Sohn, J. Y., Sokolenko, A., Solodko, E., Starkov, N., Stoel, L., Stramaglia, M. E., Sukhonos, D., Suzuki, Y., Takahashi, S., Tastet, J. L., Teterin, P., Than Naing, S., Timiryasov, I., Tioukov, V., Tommasini, D., Torii, M., Treille, D., Tsenov, R., Ulin, S., Ursov, E., Ustyuzhanin, A., Uteshev, Z., Uvarov, L., Vankova-Kirilova, G., Vannucci, F., Venkova, P., Venturi, V., Vidulin, I., Vilchinski, S., Vincke, Heinz, Vincke, Helmut, Visone, C., Vlasik, K., Volkov, A., Voronkov, R., van Waasen, S., Wanke, R., Wertelaers, P., Williams, O., Woo, J. -K, Wurm, M., Xella, S., Yilmaz, D., Yilmazer, A. U., Yoon, C. S., Zaytsev, Yu., Zelenov, A., Zimmerman, J., Ahdida, C., Akmete, A., Albanese, R., Alt, J., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Baaltasar Dos Santos, F., Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Berdnikov, A. Y., Berdnikov, Y. A., Betancourt, C., Bezshyiko, I., Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, I., Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, Richard, Breton, D., Brignoli, A., Buescher, V., Buonaura, A., Buontempo, S., Cadeddu, S., Calviani, M., Campanelli, M., Casolino, M., Charitonidis, N., Chau, P., Chauveau, J., Chepurnov, A., Chernyavskiy, M., Choi, K. -Y, Chumakov, A., Climescu, M., Conaboy, A., Congedo, L., Cornelis, K., Cristinziani, M., Crupano, A., Dallavalle, G. M., Datwyler, A., D'Ambrosio, N., D'Appollonio, G., de Asmundis, R., De Carvalho Saraiva, J., De Lellis, G., de Magistris, M., De Roeck, A., De Serio, M., De Simone, D., Dedenko, L., Dergachev, P., Di Crescenzo, A., Di Giulio, L., Dib, C., Dijkstra, H., Dmitrenko, V., Dougherty, L. A., Dolmatov, A., Donskov, S., Drohan, V., Dubreuil, A., Durhan, O., Ehlert, M., Elikkaya, E., Enik, T., Etenko, A., Fedin, O., Fedotovs, F., Ferrillo, M., Ferro-Luzzi, M., Filippov, K., Fini, R. A., Fischer, H., Fonte, P., Franco, C., Fraser, M., Fresa, R., Froeschl, R., Fukuda, T., Galati, G., Gall, J., Gatignon, L., Gavrilov, G., Gentile, V., Goddard, B., Golinka-Bezshyyko, L., Golovatiuk, A., Golovtsov, V., Golubkov, D., Golutvin, A., Gorbounov, P., Gorbunov, D., Gorbunov, S., Gorkavenko, V., Gorshenkov, M., Grachev, V., Grandchamp, A. L., Graverini, E., Grenard, J. -L, Grenier, D., Grichine, V., Gruzinskii, N., Guler, A. M., Guz, Yu., Haefeli, G. J., Hagner, C., Hakobyan, H., Harris, I. W., van Herwijnen, E., Hessler, C., Hollnagel, A., Hosseini, B., Hushchyn, M., Iaselli, G., Iuliano, A., Jacobsson, R., Jokovic, D., Jonker, M., Kadenko, I., Kain, V., Kaiser, B., Kamiscioglu, C., Karpenkov, D., Kershaw, K., Khabibullin, M., Khalikov, E., Khaustov, G., Khoriauli, G., Khotyantsev, A., Kim, Y. G., Kim, V., Kitagawa, N., Ko, J. -W, Kodama, K., Kolesnikov, A., Kolev, D. I., Kolosov, V., Komatsu, M., Kono, A., Konovalova, N., Kormannshaus, S., Korol, I., Korol'ko, I., Korzenev, A., Koukovini Platia, E., Kovalenko, S., Krasilnikova, I., Kudenko, Y., Kurbatov, E., Kurbatov, P., Kurochka, V., Kuznetsova, E., Lacker, H. M., Lamont, M., Lantwin, O., Lauria, A., Lee, K. S., Lee, K. Y., Leonardo, N., Levy, J. -M, Loschiavo, V. P., Lopes, L., Lopez Sola, E., Lyons, F., Lyubovitskij, V., Maalmi, J., Magnan, A. -M, Maleev, V., Malinin, A., Manabe, Y., Managadze, A. K., Manfredi, M., Marsh, S., Marshall, A. M., Mefodev, A., Mermod, P., Miano, A., Mikado, S., Mikhaylov, Yu., Mikulenko, A., Milstead, D. A., Mineev, O., Montesi, M. C., Morishima, K., Movchan, S., Muttoni, Y., Naganawa, N., Nakamura, M., Nakano, T., Nasybulin, S., Ninin, P., Nishio, A., Obinyakov, B., Ogawa, S., Okateva, N., Osborne, J., Ovchynnikov, M., Owtscharenko, N., Owen, P. H., Pacholek, P., Park, B. D., Pastore, A., Patel, M., Pereyma, D., Perillo-Marcone, A., Petkov, G. L., Petridis, K., Petrov, A., Podgrudkov, D., Poliakov, V., Polukhina, N., Prieto Prieto, J., Prokudin, M., Prota, A., Quercia, A., Rademakers, A., Rakai, A., Ratnikov, F., Rawlings, T., Redi, F., Reghunath, A., Ricciardi, S., Rinaldesi, M., Rodin, Volodymyr, Rodin, Viktor, Robbe, P., Rodrigues Cavalcante, A. B., Roganova, T., Rokujo, H., Rosa, G., Ruchayskiy, O., Ruf, T., Samoylenko, V., Samsonov, V., Sanchez Galan, F., Santos Diaz, P., Sanz Ull, A., Sato, O., Savchenko, E. S., Schliwinski, J. S., Schmidt-Parzefall, W., Schumann, M., Serra, N., Sgobba, S., Shadura, O., Shakin, A., Shaposhnikov, M., Shatalov, P., Shchedrina, T., Shchutska, L., Shevchenko, V., Shibuya, H., Shihora, L., Shirobokov, S., Shustov, A., Silverstein, S. B., Simone, S., Simoniello, R., Skorokhvatov, M., Smirnov, S., Soares, G., Sohn, J. Y., Sokolenko, A., Solodko, E., Starkov, N., Stoel, L., Stramaglia, M. E., Sukhonos, D., Suzuki, Y., Takahashi, S., Tastet, J. L., Teterin, P., Than Naing, S., Timiryasov, I., Tioukov, V., Tommasini, D., Torii, M., Treille, D., Tsenov, R., Ulin, S., Ursov, E., Ustyuzhanin, A., Uteshev, Z., Uvarov, L., Vankova-Kirilova, G., Vannucci, F., Venkova, P., Venturi, V., Vidulin, I., Vilchinski, S., Vincke, Heinz, Vincke, Helmut, Visone, C., Vlasik, K., Volkov, A., Voronkov, R., van Waasen, S., Wanke, R., Wertelaers, P., Williams, O., Woo, J. -K, Wurm, M., Xella, S., Yilmaz, D., Yilmazer, A. U., Yoon, C. S., Zaytsev, Yu., Zelenov, A., and Zimmerman, J.
- Abstract
The Search for Hidden Particles (SHiP) Collaboration has proposed a general-purpose experimental facility operating in beam-dump mode at the CERN SPS accelerator to search for light, feebly interacting particles. In the baseline configuration, the SHiP experiment incorporates two complementary detectors. The upstream detector is designed for recoil signatures of light dark matter (LDM) scattering and for neutrino physics, in particular with tau neutrinos. It consists of a spectrometer magnet housing a layered detector system with high-density LDM/neutrino target plates, emulsion-film technology and electronic high-precision tracking. The total detector target mass amounts to about eight tonnes. The downstream detector system aims at measuring visible decays of feebly interacting particles to both fully reconstructed final states and to partially reconstructed final states with neutrinos, in a nearly background-free environment. The detector consists of a 50m\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\mathrm { \,m}$$\end{document} long decay volume under vacuum followed by a spectrometer and particle identification system with a rectangular acceptance of 5 m in width and 10 m in height. Using the high-intensity beam of 400GeV\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\,\mathrm {GeV}$$\end{document} protons, the experiment aims at profiting from the 4x1019\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$4\times 10<^>{
- Published
- 2022
- Full Text
- View/download PDF
4. Geant4 Simulation of the p+11B → 3α Reaction.
- Author
-
Bagulya, A. V., Grichine, V. M., Zavestovskaya, I. N., and Ryabov, V. A.
- Abstract
In order to increase the absorbed dose around the Bragg peak region, it is proposed to use the p+
11 B → 3α reaction for proton therapy. This reaction is not implemented in the Geant4 software package. A simplified model of this reaction is proposed which will allow its full-scale simulation. The model is fully compatible with the Geant4 software package and can be integrated with it. The model predictions and background events from other processes are discussed. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
- View/download PDF
5. Insight into History of GCR Heavy Nuclei Fluxes by Their Tracks in Meteorites.
- Author
-
Alexandrov, A. B., Bagulya, A. V., Babaev, P. A., Chernyavsky, M. M., Gippius, A. A., Gorbunov, S. A., Grachev, V. M., Kalinina, G. V., Konovalova, N. S., Okateva, N. M., Polukhina, N. G., Rymzhanov, R. A., Starkov, N. I., Soe, Than Naing, Shchedrina, T. V., Volkov, A. E., and Voronkov, R. A.
- Subjects
- *
HEAVY nuclei , *GALACTIC cosmic rays , *METEORITES , *SOLAR system , *STELLAR mergers - Abstract
The OLIMPIYA project investigates tracks of galactic cosmic rays (GCR) in olivine crystals from two meteorites-pallasites of different exposure ages. Extended statistics (up to 21 743 processed tracks) enabled to reveal a difference between the charge spectra of heaviest nuclei registered in these pallasites versus those from detectors mounted on near-Earth orbit satellites, as well as a difference between the GCR spectra registered in the meteorites themselves. Comparison of the -element abundances in these spectra points that GCR fluxes from at least two rare cosmic nucleosynthesis events with enhanced production of these elements reached the Solar System during the exposition age of the older meteorite. Correlations of the experimental results with parameters of supernovae, asymptotic giant branches stars and neutron star mergers (NSM) are also discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
6. Sensitivity of the SHiP experiment to light dark matter
- Author
-
Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Baaltasar Dos Santos, F., Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Bencivenni, G., Berdnikov, A. Y., Berdnikov, Y. A., Bertani, M., Betancourt, C., Bezshyiko, I., Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, I., Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, Richard, Breton, D., Buscher, V., Buonaura, A., Buonocore, L., Buontempo, S., Cadeddu, S., Calcaterra, A., Calviani, M., Campanelli, M., Casolino, M., Charitonidis, N., Chau, P., Chauveau, J., Chepurnov, A., Chernyavskiy, M., Choi, K. -Y, Chumakov, A., Ciambrone, P., Cicero, V., Congedo, L., Cornelis, K., Cristinziani, M., Crupano, A., Dallavalle, G. M., Datwyler, A., D'Ambrosio, N., D'Appollonio, G., de Asmundis, R., De Carvalho Saraiva, J., De Lellis, G., de Magistris, M., De Roeck, A., De Serio, M., De Simone, D., Dedenko, L., Dergachev, P., Di Crescenzo, A., Di Giulio, L., Di Marco, N., Dib, C., Dijkstra, H., Dmitrenko, V., Dougherty, L. A., Dolmatov, A., Domenici, D., Donskov, S., Drohan, V., Dubreuil, A., Durhan, O., Ehlert, M., Elikkaya, E., Enik, T., Etenko, A., Fabbri, F., Fedin, O., Fedotovs, F., Felici, G., Ferrillo, M., Ferro-Luzzi, M., Filippov, K., Fini, R. A., Fonte, P., Franco, C., Fraser, M., Fresa, R., Froeschl, R., Frugiuele, C., Fukuda, T., Galati, G., Gall, J., Gatignon, L., Gavrilov, G., Gentile, V., Goddard, B., Golinka-Bezshyyko, L., Golovatiuk, A., Golovtsov, V., Golubkov, D., Golutvin, A., Gorbounov, P., Gorbunov, D., Gorbunov, S., Gorkavenko, V., Gorshenkov, M., Grachev, V., Grandchamp, A. L., Graverini, E., Grenard, J. -L, Grenier, D., Grichine, V., Gruzinskii, N., Guler, A. M., Guz, Yu., Haefeli, G. J., Hagner, C., Hakobyan, H., Harris, I. W., van Herwijnen, E., Hessler, C., Hollnagel, A., Hosseini, B., Hushchyn, M., Iaselli, G., Iuliano, A., Jacobsson, R., Jokovic, D., Jonker, M., Kadenko, I., Kain, V., Kaiser, B., Kamiscioglu, C., Karpenkov, D., Kershaw, K., Khabibullin, M., Khalikov, E., Khaustov, G., Khoriauli, G., Khotyantsev, A., Kim, Y. G., Kim, V., Kitagawa, N., Ko, J. -W, Kodama, K., Kolesnikov, A., Kolev, D. I., Kolosov, V., Komatsu, M., Kono, A., Konovalova, N., Kormannshaus, S., Korol, I., Korol'ko, I., Korzenev, A., Kostyukhin, V., Koukovini Platia, E., Kovalenko, S., Krasilnikova, I., Kudenko, Y., Kurbatov, E., Kurbatov, P., Kurochka, V., Kuznetsova, E., Lacker, H. M., Lamont, M., Lanfranchi, G., Lantwin, O., Lauria, A., Lee, K. S., Lee, K. Y., Levy, J. -M, Loschiavo, V. P., Lopes, L., Lopez Sola, E., Lyubovitskij, V., Maalmi, J., Magnan, A., Maleev, V., Malinin, A., Maltoni, F., Manabe, Y., Managadze, A. K., Manfredi, M., Marsh, S., Marshall, A. M., Mattelaer, O., Mefodev, A., Mermod, P., Miano, A., Mikado, S., Mikhaylov, Yu., Milstead, D. A., Mineev, O., Montanari, A., Montesi, M. C., Morishima, K., Movchan, S., Muttoni, Y., Naganawa, N., Nakamura, M., Nakano, T., Nasybulin, S., Ninin, P., Nishio, A., Novikov, A., Obinyakov, B., Ogawa, S., Okateva, N., Opitz, B., Osborne, J., Ovchynnikov, M., Owtscharenko, N., Owen, P. H., Pacholek, P., Paoloni, A., Park, B. D., Pastore, A., Patel, M., Pereyma, D., Perillo-Marcone, A., Petkov, G. L., Petridis, K., Petrov, A., Podgrudkov, D., Poliakov, V., Polukhina, N., Prieto Prieto, J., Prokudin, M., Prota, A., Quercia, A., Rademakers, A., Rakai, A., Ratnikov, F., Rawlings, T., Redi, F., Ricciardi, S., Rinaldesi, M., Rodin, Volodymyr, Rodin, Viktor, Robbe, P., Rodrigues Cavalcante, A. B., Roganova, T., Rokujo, H., Rosa, G., Rovelli, T., Ruchayskiy, O., Ruf, T., Samoylenko, V., Samsonov, V., Sanchez Galan, F., Santos Diaz, P., Sanz Ull, A., Saputi, A., Sato, O., Savchenko, E. S., Schliwinski, J. S., Schmidt-Parzefall, W., Serra, N., Sgobba, S., Shadura, O., Shakin, A., Shaposhnikov, M., Shatalov, P., Shchedrina, T., Shchutska, L., Shevchenko, V., Shibuya, H., Shirobokov, S., Shustov, A., Silverstein, S. B., Simone, S., Simoniello, R., Skorokhvatov, M., Smirnov, S., Sohn, J. Y., Sokolenko, A., Solodko, E., Starkov, N., Stoel, L., Stramaglia, M. E., Sukhonos, D., Suzuki, Y., Takahashi, S., Tastet, J. L., Teterin, P., Than Naing, S., Timiryasov, I., Tioukov, V., Tommasini, D., Torii, M., Tosi, N., Tramontano, F., Treille, D., Tsenov, R., Ulin, S., Ursov, E., Ustyuzhanin, A., Uteshev, Z., Uvarov, L., Vankova-Kirilova, G., Vannucci, F., Venturi, V., Vilchinski, S., Vincke, Heinz, Vincke, Helmut, Visone, C., Vlasik, K., Volkov, A., Voronkov, R., van Waasen, S., Wanke, R., Wertelaers, P., Williams, O., Woo, J. -K, Wurm, M., Xella, S., Yilmaz, D., Yilmazer, A. U., Yoon, C. S., Zaytsev, Yu., Zelenov, A., Zimmerman, J., Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Baaltasar Dos Santos, F., Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Bencivenni, G., Berdnikov, A. Y., Berdnikov, Y. A., Bertani, M., Betancourt, C., Bezshyiko, I., Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, I., Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, Richard, Breton, D., Buscher, V., Buonaura, A., Buonocore, L., Buontempo, S., Cadeddu, S., Calcaterra, A., Calviani, M., Campanelli, M., Casolino, M., Charitonidis, N., Chau, P., Chauveau, J., Chepurnov, A., Chernyavskiy, M., Choi, K. -Y, Chumakov, A., Ciambrone, P., Cicero, V., Congedo, L., Cornelis, K., Cristinziani, M., Crupano, A., Dallavalle, G. M., Datwyler, A., D'Ambrosio, N., D'Appollonio, G., de Asmundis, R., De Carvalho Saraiva, J., De Lellis, G., de Magistris, M., De Roeck, A., De Serio, M., De Simone, D., Dedenko, L., Dergachev, P., Di Crescenzo, A., Di Giulio, L., Di Marco, N., Dib, C., Dijkstra, H., Dmitrenko, V., Dougherty, L. A., Dolmatov, A., Domenici, D., Donskov, S., Drohan, V., Dubreuil, A., Durhan, O., Ehlert, M., Elikkaya, E., Enik, T., Etenko, A., Fabbri, F., Fedin, O., Fedotovs, F., Felici, G., Ferrillo, M., Ferro-Luzzi, M., Filippov, K., Fini, R. A., Fonte, P., Franco, C., Fraser, M., Fresa, R., Froeschl, R., Frugiuele, C., Fukuda, T., Galati, G., Gall, J., Gatignon, L., Gavrilov, G., Gentile, V., Goddard, B., Golinka-Bezshyyko, L., Golovatiuk, A., Golovtsov, V., Golubkov, D., Golutvin, A., Gorbounov, P., Gorbunov, D., Gorbunov, S., Gorkavenko, V., Gorshenkov, M., Grachev, V., Grandchamp, A. L., Graverini, E., Grenard, J. -L, Grenier, D., Grichine, V., Gruzinskii, N., Guler, A. M., Guz, Yu., Haefeli, G. J., Hagner, C., Hakobyan, H., Harris, I. W., van Herwijnen, E., Hessler, C., Hollnagel, A., Hosseini, B., Hushchyn, M., Iaselli, G., Iuliano, A., Jacobsson, R., Jokovic, D., Jonker, M., Kadenko, I., Kain, V., Kaiser, B., Kamiscioglu, C., Karpenkov, D., Kershaw, K., Khabibullin, M., Khalikov, E., Khaustov, G., Khoriauli, G., Khotyantsev, A., Kim, Y. G., Kim, V., Kitagawa, N., Ko, J. -W, Kodama, K., Kolesnikov, A., Kolev, D. I., Kolosov, V., Komatsu, M., Kono, A., Konovalova, N., Kormannshaus, S., Korol, I., Korol'ko, I., Korzenev, A., Kostyukhin, V., Koukovini Platia, E., Kovalenko, S., Krasilnikova, I., Kudenko, Y., Kurbatov, E., Kurbatov, P., Kurochka, V., Kuznetsova, E., Lacker, H. M., Lamont, M., Lanfranchi, G., Lantwin, O., Lauria, A., Lee, K. S., Lee, K. Y., Levy, J. -M, Loschiavo, V. P., Lopes, L., Lopez Sola, E., Lyubovitskij, V., Maalmi, J., Magnan, A., Maleev, V., Malinin, A., Maltoni, F., Manabe, Y., Managadze, A. K., Manfredi, M., Marsh, S., Marshall, A. M., Mattelaer, O., Mefodev, A., Mermod, P., Miano, A., Mikado, S., Mikhaylov, Yu., Milstead, D. A., Mineev, O., Montanari, A., Montesi, M. C., Morishima, K., Movchan, S., Muttoni, Y., Naganawa, N., Nakamura, M., Nakano, T., Nasybulin, S., Ninin, P., Nishio, A., Novikov, A., Obinyakov, B., Ogawa, S., Okateva, N., Opitz, B., Osborne, J., Ovchynnikov, M., Owtscharenko, N., Owen, P. H., Pacholek, P., Paoloni, A., Park, B. D., Pastore, A., Patel, M., Pereyma, D., Perillo-Marcone, A., Petkov, G. L., Petridis, K., Petrov, A., Podgrudkov, D., Poliakov, V., Polukhina, N., Prieto Prieto, J., Prokudin, M., Prota, A., Quercia, A., Rademakers, A., Rakai, A., Ratnikov, F., Rawlings, T., Redi, F., Ricciardi, S., Rinaldesi, M., Rodin, Volodymyr, Rodin, Viktor, Robbe, P., Rodrigues Cavalcante, A. B., Roganova, T., Rokujo, H., Rosa, G., Rovelli, T., Ruchayskiy, O., Ruf, T., Samoylenko, V., Samsonov, V., Sanchez Galan, F., Santos Diaz, P., Sanz Ull, A., Saputi, A., Sato, O., Savchenko, E. S., Schliwinski, J. S., Schmidt-Parzefall, W., Serra, N., Sgobba, S., Shadura, O., Shakin, A., Shaposhnikov, M., Shatalov, P., Shchedrina, T., Shchutska, L., Shevchenko, V., Shibuya, H., Shirobokov, S., Shustov, A., Silverstein, S. B., Simone, S., Simoniello, R., Skorokhvatov, M., Smirnov, S., Sohn, J. Y., Sokolenko, A., Solodko, E., Starkov, N., Stoel, L., Stramaglia, M. E., Sukhonos, D., Suzuki, Y., Takahashi, S., Tastet, J. L., Teterin, P., Than Naing, S., Timiryasov, I., Tioukov, V., Tommasini, D., Torii, M., Tosi, N., Tramontano, F., Treille, D., Tsenov, R., Ulin, S., Ursov, E., Ustyuzhanin, A., Uteshev, Z., Uvarov, L., Vankova-Kirilova, G., Vannucci, F., Venturi, V., Vilchinski, S., Vincke, Heinz, Vincke, Helmut, Visone, C., Vlasik, K., Volkov, A., Voronkov, R., van Waasen, S., Wanke, R., Wertelaers, P., Williams, O., Woo, J. -K, Wurm, M., Xella, S., Yilmaz, D., Yilmazer, A. U., Yoon, C. S., Zaytsev, Yu., Zelenov, A., and Zimmerman, J.
- Abstract
Dark matter is a well-established theoretical addition to the Standard Model supported by many observations in modern astrophysics and cosmology. In this context, the existence of weakly interacting massive particles represents an appealing solution to the observed thermal relic in the Universe. Indeed, a large experimental campaign is ongoing for the detection of such particles in the sub-GeV mass range. Adopting the benchmark scenario for light dark matter particles produced in the decay of a dark photon, with alpha(D) = 0.1 and m(A ') = 3m(chi), we study the potential of the SHiP experiment to detect such elusive particles through its Scattering and Neutrino detector (SND). In its 5-years run, corresponding to 2 center dot 10(20) protons on target from the CERN SPS, we find that SHiP will improve the current limits in the mass range for the dark matter from about 1 MeV to 300 MeV. In particular, we show that SHiP will probe the thermal target for Majorana candidates in most of this mass window and even reach the Pseudo-Dirac thermal relic.
- Published
- 2021
- Full Text
- View/download PDF
7. Estimation of the Fragmentation Effect in the Registration of Superheavy Nuclei of Galactic Cosmic Rays in Pallasites.
- Author
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Babaev, P. A., Bagulya, A. V., Volkov, A. E., Gorbunov, S. A., Kalinina, G. V., Konovalova, N. S., Okateva, N. M., Polukhina, N. G., Sadykov, Zh. T., Starkov, N. I., Starkova, E. N., Soe, Than Naing, Chernyavskiy, M. M., and Shchedrina, T. V.
- Subjects
- *
GALACTIC cosmic rays , *GALACTIC nuclei , *HEAVY nuclei , *COSMIC rays , *INTERSTELLAR medium - Abstract
We report on the results of model calculations for estimating the fragmentation effect in the registration of heavy and superheavy nuclei of galactic cosmic rays in olivine crystals from pallasite at the Marjalahti and Eagle Station. The measurement of fluxes and spectra of heavy and superheavy nuclei in cosmic rays is a sensitive method for studying the composition and possible sources of cosmic rays, the processes occurring in the sources themselves and in the interstellar medium, and forms the basis for constructing models of cosmic ray confinement in the Galaxy. The database obtained in the OLIMPIYA experiment, which includes characteristics of 21743 tracks, is the largest database for charges Z > 55 at present. The estimates of fragmentation of nuclei in pallasites, which have been obtained based on model calculations, show that the effect of this process on the resulting charge spectrum is insignificant. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
8. Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles.
- Author
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Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Santos, F. Baaltasar Dos, Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., and Bencivenni, G.
- Subjects
PHOTONS ,FERMIONS ,SHIPS ,PHOTON pairs ,QUARKS - Abstract
Dark photons are hypothetical massive vector particles that could mix with ordinary photons. The simplest theoretical model is fully characterised by only two parameters: the mass of the dark photon m γ D and its mixing parameter with the photon, ε . The sensitivity of the SHiP detector is reviewed for dark photons in the mass range between 0.002 and 10 GeV. Different production mechanisms are simulated, with the dark photons decaying to pairs of visible fermions, including both leptons and quarks. Exclusion contours are presented and compared with those of past experiments. The SHiP detector is expected to have a unique sensitivity for m γ D ranging between 0.8 and 3.3 - 0.5 + 0.2 GeV, and ε 2 ranging between 10 - 11 and 10 - 17 . [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
9. Anomaly of the Charge Spectrum of Galactic Cosmic Ray Nuclei in Olivines as Evidence of Meteorite Radiation History.
- Author
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Alexandrov, A. B., Bagulya, A. V., Volkov, A. E., Gippius, A. A., Goncharova, L. A., Gorbunov, S. A., Grachev, V. M., Kalinina, G. V., Konovalova, N. S., Okateva, N. M., Pavlova, T. A., Polukhina, N. G., Starkov, N. I., Soe, Than Naing, Chernyavskii, M. M., and Shchedrina, T. V.
- Abstract
A new additional aspect of the analysis of the data of the OLYMPIA experiment on the search for nuclei of heavy cosmic ray components in olivine crystals from stony—iron meteorites is presented. Two groups of crystals with different charge spectra of recorded nuclei are detected. Possible causes of this phenomenon and its effect on the final spectrum are discussed. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
10. Measurement of the muon flux from 400 GeV/c protons interacting in a thick molybdenum/tungsten target.
- Author
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Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Santos, F. Baaltasar Dos, Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., and Bencivenni, G.
- Subjects
MUONS ,MOLYBDENUM ,TUNGSTEN ,PROTON beams ,MONTE Carlo method ,PROTONS - Abstract
The SHiP experiment is proposed to search for very weakly interacting particles beyond the Standard Model which are produced in a 400 GeV/c proton beam dump at the CERN SPS. About 10 11 muons per spill will be produced in the dump. To design the experiment such that the muon-induced background is minimized, a precise knowledge of the muon spectrum is required. To validate the muon flux generated by our Pythia and GEANT4 based Monte Carlo simulation (FairShip), we have measured the muon flux emanating from a SHiP-like target at the SPS. This target, consisting of 13 interaction lengths of slabs of molybdenum and tungsten, followed by a 2.4 m iron hadron absorber was placed in the H4 400 GeV/c proton beam line. To identify muons and to measure the momentum spectrum, a spectrometer instrumented with drift tubes and a muon tagger were used. During a 3-week period a dataset for analysis corresponding to (3.27 ± 0.07) × 10 11 protons on target was recorded. This amounts to approximatively 1% of a SHiP spill. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
11. Determination of Charges of Superheavy Nuclei in Finding them in Nature.
- Author
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Aleksandrov, A. B., Alekseev, V. A., Bagulya, A. V., Dashkina, A. B., Chernyavskiy, M. M., Gippius, A. A., Goncharova, L. A., Gorbunov, S. A., Grachev, V. M., Kalinina, G. V., Konovalova, N. S., Okateva, N. M., Pavlova, T. A., Polukhina, N. G., Starkov, N. I., Soe, T. N., Shchedrina, T. V., and Volkov, A. E.
- Abstract
The results of the search for tracks of heavy and superheavy nuclei of galactic cosmic rays in the charge range Z = 26 − 129, identified in olivine crystals from Maryalahti and Eagle Station meteorites are presented. The database including characteristics of 21743 tracks, obtained in the OLIMPIA experiment, is currently the largest one within the charge range under study. It includes three tracks of superheavy nuclei with charge 119
−6 +10 and a minimum lifetime estimated as several tens of years, which can be considered as a direct experimental validation of the existence of natural superheavy nuclei from the "stability island". [ABSTRACT FROM AUTHOR]- Published
- 2019
- Full Text
- View/download PDF
12. Muonography of Large Natural and Industrial Objects.
- Author
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Abiev, A. K., Bagulya, A. V., Chernyavsky, M. M., Dimitrienko, A. A., Gadjiev, A. A., Gadjiev, M. S., Galkin, V. I., Gippius, A. A., Goncharova, L. A., Grachev, V. M., Konovalov, A. S., Konovalova, N. S., Managadze, A. K., Okateva, N. M., Polukhina, N. G., Roganova, T. M., Shchedrina, T. V., Starkov, N. I., Teymurov, A. A., and Tioukov, V. E.
- Subjects
- *
MUONS , *NUCLEAR counters , *COSMIC ray muons , *COSMIC rays , *COSMIC ray showers , *POWER resources , *IMAGE analysis - Abstract
Cosmic ray muonography is a novel technique for imaging of the internal structures of large natural and industrial objects. It exploits the capability of high energy muons from cosmic rays to penetrate large thicknesses of large subjects to be studied, in order to obtain a density map. It uses muon flux attenuation and absorption in materials of investigated objects. Nuclear emulsions are tracking detectors well suited to be employed in muonography for investigations of inner structure of large objects up to kilometers size, since emulsions have firstly an excellent angular resolution, they are compact and robust, do not require power supply. The muonography methods are applied to study one of UNESCO world heritage objects, the unusual building in the Naryn-Kala citadel hidden underground. The use of nuclear emulsions as probing radiation detectors provides for a uniquely high resolution capacity of recording instrumentation combined with the potential of modern image analysis methods giving 3D reconstruction of the internal structures of the investigated object. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
13. Study of the Pallasite Radiation History by Track Analysis.
- Author
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Alexeev, V. A., Bagulya, A. V., Volkov, A. E., Gippius, A. A., Goncharova, L. A., Gorbunov, S. A., Grachev, V. M., Dashkina, A. B., Kalinina, G. V., Konovalova, N. S., Okateva, N. M., Pavlova, T. A., Polukhina, N. G., Starkov, N. I., Soe, Than Naing, Chernyvsky, M. M., and Shchedrina, T. V.
- Abstract
This work was performed within the OLYMPIA experiment on the study of tracks of heavy and superheavy cosmic ray nuclei in olivine crystals from Marjalahti and Eagle Station pallasites. Depth distributions of the track formation rate for heavy cosmic ray nuclei in olivine crystals from pallasites of different pre-atmospheric sizes were obtained. The dependences obtained were used to analyze the data on the track density in olivine crystals from the Marjalahti pallasite. In three crystals, the track distribution with a high density gradient was detected, which indicates a complicated radiation history of the meteorite. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
14. Search for the 'stability island' of superheavy nuclei using natural track detectors.
- Author
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Alekseev, V., Bagulya, A., Volkov, A., Gippius, A., Goncharova, L., Gorbunov, S., Kalinina, G., Konovalova, N., Okat'eva, N., Pavlova, T., Polukhina, N., Starkov, N., Soe, Tang, Chernyavsky, M., and Shchedrina, T.
- Abstract
The method of using natural track detectors, i.e., meteorite olivine crystals, is developed and improved applied to the problem of searching for superheavy nuclei in nature, in galactic cosmic rays (GCR). The new technique implements the sequence of etching, grinding, and track identification operations using the automated PAVICOM facility. The data on the track length and etching rate in combination with the results of calibration on heavy nucleus accelerators allowed the development of a technique for determining the GCR nucleus charge with an accuracy of ±2. On this basis, a significant set of experimental data on superheavy nuclei of natural origin was obtained (21743GCRheavy nucleiwith Z >20, including three nucleiwith a charge of 119 ). The minimum lifetime T of the last-mentioned is within 50 years< T < 100 years, which exceeds the lifetime of transfermium nuclei synthesized on accelerators by many orders of magnitude. The long-lived superheavy nuclei detected in the GCR spectrum can belong to the 'stability island'. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
15. X-ray spectra from deuterated crystal structures interacting with ion beams with energies below 25 keV.
- Author
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Bagulya, A., Dalkarov, O., Negodaev, M., Rusetskii, A., Tsehosh, V., and Bolotokov, A.
- Abstract
The yields of nuclear reactions in textured CVD (chemical vapor deposition) diamond samples irradiated with a deuteron ion beam are measured. The sample orientation in the deuteron beam is shown to influence the value of the DD reaction yield. The X-ray fluorescence spectra from the surface of deuterated targets irradiated with an ion beam are studied. Analysis of the fluorescence spectra revealed 'additional' peaks which cannot be associated with any known elements and require separate studies. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
16. Interaction between 20−30 keV X-ray quanta and deuterated crystal structures.
- Author
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Bagulya, A., Dalkarov, O., Negodaev, M., Rusetskii, A., Tsehosh, V., Lyakhov, B., Saunin, E., Bolotokov, A., and Tuleushev, Yu.
- Abstract
Two independent methods based on a neutron detector with He-3 counters and a CR-39 track detector are used to measure neutron and proton emissions from the nuclear reaction in samples of deuterated structures of textured CVD (chemical vapor deposited) diamond, palladium, and zirconium irradiated with X-ray quantum beams. It is demonstrated that, in solid-state deuterated targets, the DD reaction can be stimulated by X-ray quanta with energies of 20−30 keV. [ABSTRACT FROM AUTHOR]
- Published
- 2017
- Full Text
- View/download PDF
17. Test Experiments on muon radiography with emulsion track detectors in Russia.
- Author
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Aleksandrov, A., Bagulya, A., Chernyavsky, M., Galkin, V., Dedenko, L., Fomenko, N., Konovalova, N., Lellis, G., Managadze, A., Orurk, O., Polukhina, N., Roganova, T., Shchedrina, T., Sirignano, C., Starkov, N., Naing So, Tan, Tioukov, V., Vladimirov, M., and Zemskova, S.
- Abstract
In Russia, the Lebedev Physical Institute of the Russian Academy of Sciences and the Skobeltsyn Institute of Nuclear Physics of Moscow State University are starting a series of pilot muon radiography exper-iments with nuclear emulsion detectors to study the interior structure of large-scale natural and industrial objects. As a result, the optimal conditions for experimental organization have been determined, algorithms of data processing have been worked out, and peculiarities of the method have been ultimately investigated. Here we present the experimental data, including field observations (in the mine of Geophysical department of Russian Academy of Sciences) confirming the availability of the method with track detectors on the base of nuclear emulsions with uniquely high spatial resolution, providing their high-tech automated processing. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
18. Charge spectrum of superheavy nuclei of galactic cosmic rays obtained in the OLIMPIA experiment.
- Author
-
Bagulya, A., Vladimirov, M., Volkov, A., Goncharova, L., Gorbunov, S., Kalinina, G., Konovalova, N., Okatyeva, N., Pavlova, T., Polukhina, N., Starkov, N., Soe, Than, Chernyavsky, M., and Shchedrina, T.
- Abstract
In this paper, we present the last results of the OLIMPIA experiment on the search for and study of traces of heavy and superheavy element nuclei of galactic cosmic rays in olivine crystals from meteorites. The charge spectrum of cosmic rays in the region of heavy nuclei is obtained, three superheavy nuclei of natural origin with charges in the range 105 < Z < 130 and lifetimes longer than 3000 years, being a part of the so-called 'stability island', are identified. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
19. Prospects of the study of geological structures by muon radiography based on emulsion track detectors.
- Author
-
Dedenko, L., Managadze, A., Roganova, T., Bagulya, A., Vladimirov, M., Zemskova, S., Konovalova, N., Polukhina, N., Starkov, N., Chernyavskiy, M., and Grachev, V.
- Abstract
For the first time in Russia, researchers of the Lebedev Physical Institute and Skobeltsyn Institute of Nuclear Physics perform test experiments for studying the internal structure of large natural and industrial objects by the muon radiography method using the emulsion technique. The used technique is based on the high penetrability of cosmic muons and implies the detection of the attenuation of their flux passed through the object under study using nuclear photoemulsions with a uniquely high spatial resolution. The results of the first test experiment are presented, which confirm the promising application of the method when using emulsion track detectors and their subsequent hi-tech automated processing. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF
20. Detecting galactic cosmic ray transuranium nuclei in olivine crystals from meteorites.
- Author
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Alexandrov, A. B., Bagulya, A. V., Vladimirov, M. S., Goncharova, L. A., Ivliev, A. I., Kalinina, G. V., Kashkarov, L. L., Konovalova, N. S., Okateva, N. M., Polukhina, N. G., Roussetski, A. S., and Starkov, N. I.
- Abstract
Results from the experimental search for and identification of tracks from the superheavy and transuranium nuclei of galactic cosmic rays in pallacite olivine crystals, conducted as part of project OLIMPIA [1], are presented. To date, 170 crystals from Marjalahti and Eagle Station pallacites have been processed and 6800 tracks corresponding to nuclei with charges Z > 55 have been found; 45 of these are from nuclei with charges of 88 < Z < 92 and three super-long ones were produced by nuclei with Z > 105. The charge of one of these nuclei is estimated in the first approximation as Z = 119(+10,−6). Our data confirm the hypothesis of islands of stability for natural trans-Fermi nuclei. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
21. Enhancement of DD-reaction yields from the Ti/TiO2:Dx heterostructure by H+ and N+ ion beams using the GELIS setup.
- Author
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Bagulya, A. V., Dal’karov, O. D., Negodaev, M. A., Rusetskii, A. S., Chubenko, A. P., and Shchepetov, A. L.
- Abstract
The results on DD-reaction yield enhancement from the Ti/TiO
2 :Dx heterostructure by H+ and N+ ion beams in the energy range of 10–25 keV are presented. Neutron and proton fluxes weremeasured using a neutron detector based onHe-3 counters and a CR-39 plastic track detector. Measurements showed significant DD-reaction yield enhancement effects. The screening potential for this heterostructure under these experimental conditions was determined as Ue = 796 eV. [ABSTRACT FROM AUTHOR]- Published
- 2013
- Full Text
- View/download PDF
22. Search for superheavy elements in galactic cosmic rays.
- Author
-
Bagulya, A., Kashkarov, L., Konovalova, N., Okat'eva, N., Polukhina, N., and Starkov, N.
- Subjects
- *
GALACTIC cosmic rays , *SUPERHEAVY elements , *GALACTIC nuclei , *ELECTRIC charge , *REGRESSION analysis , *PARTICLES (Nuclear physics) , *PROBABILITY theory - Abstract
The charge distribution of approximately 6000 nuclei with charge numbers above 55 in galactic cosmic rays has been obtained in the OLIMPIYA project. Three superheavy nuclei with the charge numbers in the range 105 < Z < 130 have been detected. The regression analysis has provided a more accurate estimate of the charge number of one of these nuclei (119 with a probability of 95%). Such nuclei should form stability islands. Their detection in nature confirms theoretical predictions and justifies efforts for their synthesis under terrestrial conditions. The model calculations performed in this work possibly can explain the results of some experiments on the investigation of the charge composition of cosmic rays in which particles with charge numbers in the range 94 < Z < 100 were detected (they cannot enter into the composition of primary cosmic radiation because their lifetime is very short). The calculations indicate that events with Z > 92 are due to the fragmentation of heavier nuclei from the stability island, rather than to methodical inaccuracies or fault of instruments. Several such events have been revealed. Thus, the track method makes it possible to obtain the results very important for understanding of the physical picture of the world. The results obtained within the OLIMPIYA project show that the study of tracks of galactic cosmic rays in olivine crystals from meteorites opens new capabilities for the investigation of fluxes and spectra in cosmic rays in the region of heavy and superheavy nuclei. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
23. Simulation of passage of gallactic cosmic ray nuclei in meteorite-pallasite substance.
- Author
-
Aleksandrov, A., Bagulya, A., Vladimirov, M., Galkina, N., Goncharova, L., Kalinina, G., Kashkarov, L., Konovalova, N., Okat'eva, N., Polukhina, N., and Starkov, N.
- Abstract
The results are presented of model calculation of the interaction and yield of galactic-cosmic-ray superheavy-element nuclear fragmentation products from the 50 < Z < 92 range of their charges as they pass through a certain meteorite-pallasite substance thickness. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
24. Study of DD-reaction yields from the Ti/TiO:D heterostructure at low energies using the GELIS setup.
- Author
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Bagulya, A., Dalkarov, O., Negodaev, M., Rusetskii, A., and Chubenko, A.
- Abstract
The results of measurements of the DD-reaction yields from the Ti/TiO:D heterostructure in the energy range of 10-25 keV are presented. Neutron and proton fluxes were measured using a neutron detector based on He-3 counters and a CR-39 plastic track detector. A comparison with calculations showed the existence of significant effects of DD-reaction yield amplification. The screening potential for this heterostructure under these experimental conditions was estimated to be in the range U = 160-750 eV. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
25. Study of DD-reaction yields from a Pd/PdO:D heterostructure at low energies using the GELIS setup.
- Author
-
Bagulya, A., Dalkarov, O., Negodaev, M., Rusetskii, A., and Chubenko, A.
- Abstract
The results of measurements of the DD-reaction yields from the Pd/PdO:D heterostructure in the energy range of 10-25 keV are presented. The neutron and proton fluxes are measured using a neutron detector based on He-3 counters and a CR-39 plastic track detector. Comparisons with calculations show significant effects of DD-reaction yield amplification. The screening potential for this heterostructure under these experimental conditions is estimated as U = 630-980 eV. [ABSTRACT FROM AUTHOR]
- Published
- 2012
- Full Text
- View/download PDF
26. Heavy-particle energy loss simulation using the Geant4 toolkit.
- Author
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Bagulya, A., Vladimirov, M., Ivanchenko, V., and Starkov, N.
- Abstract
Currently, the Geant4 is a standard tool for simulating experiments in high-energy physics. In this paper, we describe an improvement of the ionization model for hadrons, ions, and classical magnetic monopole, implemented in Geant4. Simulation results are discussed; their accuracy is analyzed depending on chosen parameters, and compared with experimental data. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
27. Calibration measurements of the characteristics of tracks from superheavy nuclei in olivine crystals from meteorites.
- Author
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Aleksandrov, A. B., Bagulya, A. V., Vladimirov, M. S., Goncharova, L. A., Ivliev, A. I., Kalinina, G. V., Kashkarov, L. L., Konovalova, N. S., Okat'eva, N. M., Polukhina, N. G., Rusetskii, A. S., Starkov, N. I., and Tsarev, V. A.
- Subjects
- *
COSMIC rays , *IONIZING radiation , *NUCLEAR physics , *OLIVINE , *CRYSTALS , *CRYSTALLOGRAPHY - Abstract
To identify the charge of detected cosmic ray nuclei, it is necessary that the dynamic and geometric parameters of tracks (the etching rate of a nuclear track, as well as the length and the diameter of the track channel) be determined with a high accuracy. Results of the experimental investigations of tracks produced in olivine crystals from the Marjalahti pallasite by accelerated Xe and U nuclei are presented. These investigations were performed as part of the Olimpiya project. It is shown that the etching rate and the fully etched track length are independent of the track orientation relative to the crystallographic symmetry axes of each olivine crystal under investigation. [ABSTRACT FROM AUTHOR]
- Published
- 2009
- Full Text
- View/download PDF
28. Study of the charge distribution of galactic cosmic rays and search for superheavy nuclei traces in olivine crystals from meteorites.
- Author
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Aleksandrov, A., Bagulya, A., Vladimirov, M., Goncharova, L., Ivliev, A., Kalinina, G., Kashkarov, L., Konovalova, N., Okat’eva, N., Polukhina, N., Rusetskii, A., Starkov, N., and Tsarev, V.
- Abstract
The search for and identification of energetic nuclei of superheavy elements of cosmic rays in olivine crystals frommeteorites, currently performedwithin the Olympia project [1], are based on measurements of dynamic and geometrical parameters of tracks, i.e., chemically etchable regions of the traces of slowing down of these nuclei before their stop, using the fully automated PAVIKOM measuring system [2]. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
29. Technique for determining the charge of cosmic ray nuclei by tracks in olivine crystals from meteorites.
- Author
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Aleksandrov, A., Bagulya, A., Vladimirov, M., Goncharov, L., Ivliev, A., Kalinina, G., Kashkarov, L., Konovalova, N., Okatieva, N., Polukhina, N., Rusetskii, A., Starkov, N., and Tsarev, V.
- Abstract
A technique for identifying the charge of cosmic ray nuclei, based on measurements of the length and average etch rate of tracks chemically etched in olivine crystals from the Marjalahti pallasite is described. [ABSTRACT FROM AUTHOR]
- Published
- 2008
- Full Text
- View/download PDF
30. Erratum to: Anomaly of the Charge Spectrum of Galactic Cosmic Ray Nuclei in Olivines as Evidence of Meteorite Radiation History.
- Author
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Alexandrov, A. B., Bagulya, A. V., Volkov, A. E., Gippius, A. A., Goncharova, L. A., Gorbunov, S. A., Grachev, V. M., Kalinina, G. V., Konovalova, N. S., Okateva, N. M., Pavlova, T. A., Polukhina, N. G., Starkov, N. I., Soe, Than Naing, Chernyavskii, M. M., and Shchedrina, T. V.
- Abstract
An Erratum to this paper has been published: https://doi.org/10.3103/S1068335621090049 [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
31. Enhancement of DD-Reaction yields from the Pd/PdO:D heterostructure by N and Ne ion beams using the GELIS setup.
- Author
-
Bagulya, A., Dal'karov, O., Negodaev, M., Rusetskii, A., Chubenko, A., and Shchepetov, A.
- Abstract
The results on DD-reaction yield enhancement from the Pd/PdO:D heterostructure by N and Ne ion beams in the energy range of 10-25 keV are presented. Neutron and proton fluxes were measured using a neutron detector based on He-3 counters and a CR-39 plastic track detector. Measurements showed significant DD-reaction yield enhancement effects. The screening potential for this heterostructure under these experimental conditions was determined as U = 897 eV. [ABSTRACT FROM AUTHOR]
- Published
- 2013
- Full Text
- View/download PDF
32. Sensitivity of the SHiP experiment to Heavy Neutral Leptons.
- Author
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Ahdida, C., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Baaltasar Dos Santos, F., Back, J. J., Bagulya, A., Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, V., Bencivenni, G., and Berdnikov, Y. A.
- Published
- 2019
- Full Text
- View/download PDF
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