Search

Your search keyword '"Geissel, H."' showing total 1,119 results
Start Over Author "Geissel, H." Language english
1,119 results on '"Geissel, H."'

1. Quasi-real-time range monitoring by in-beam PET: a case for 15O

Author

Purushothaman, S., Kostyleva, D., Dendooven, P., Haettner, E., Geissel, H., Schuy, C., Weber, U., Boscolo, D., Dickel, T., Graeff, C., Hornung, C., Kazantseva, E., Kuzminchuk-Feuerstein, N., Mukha, I., Pietri, S., Roesch, H., Tanaka, Y. K., Zhao, J., Durante, M., Parodi, K., and Scheidenberger, C.

Published
2023
Full Text
View/download PDF

2. A compact start time counter using plastic scintillators readout with MPPC arrays for the WASA-FRS HypHI experiment

Author

Liu, E., Drozd, V., Ekawa, H., Escrig, S., Gao, Y., He, Y., Kasagi, A., Nakagawa, M., Ong, H., Rappold, C., Sekiya, R., Saito, T.R., Tang, X., Tanaka, Y.K., Wang, H., Yanai, A., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K.-H., Benlliure, J., Brencic, Z., Dickel, T., Dubey, S., Feijoo-Fontán, M., Fujioka, H., Geissel, H., Goldenbaum, F., González, A. Graña, Haettner, E., Harakeh, M.N., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Lommel, B., Minami, S., Morrissey, D.J., Moskal, P., Mukha, I., Muneem, A., Nakazawa, K., Nociforo, C., Pietri, S., Pochodzalla, J., Purushothaman, S., Rocco, E., Rodríguez-Sánchez, J.L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tortorelli, N., Vencelj, M., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yoshida, J., and Zhao, J.

Published
2024
Full Text
View/download PDF

3. Novel device to study double-alpha decay at the FRS Ion Catcher

Author

Varga, L., Wilsenach, H., Hall, O., Dickel, T., Reiter, M.P., Amanbayev, D., Davinson, T., Morrissey, D.J., Pohjalainen, I., Tortorelli, N., Yu, J., Zhao, J., Ayet, S., Beck, S., Bergmann, J., Ge, Z., Geissel, H., Heitz, L., Hornung, C., Kalantar-Nayestanaki, N., Khan, E., Kripko-Koncz, G., Mardor, I., Narang, M., Plass, W., Scheidenberger, C., Simonov, M., Singh, S.K., State, A., Theisen, C., Vandebrouck, M., and Woods, P.J.

Published
2024
Full Text
View/download PDF

4. Increasing the rate capability for the cryogenic stopping cell of the FRS Ion Catcher

Author

Zhao, J.W., Amanbayev, D., Dickel, T., Miskun, I., Plaß, W.R., Tortorelli, N., San Andrés, S. Ayet, Beck, S., Bergmann, J., Brencic, Z., Constantin, P., Geissel, H., Greiner, F., Gröf, L., Hornung, C., Kuzminchuk, N., Kripkó-Koncz, G., Mardor, I., Pohjalainen, I., Scheidenberger, C., Thirolf, P.G., Bagchi, S., Haettner, E., Kazantseva, E., Kostyleva, D., Oberstedt, A., Pietri, S., Reiter, M.P., Tanaka, Y.K., Wada, M., Balabanski, D.L., Benyamin, D., Harakeh, M.N., Hubbard, N., Kalantar-Nayestanaki, N., Mollaebrahimi, A., Mukha, I., Narang, M., Niwase, T., Patyk, Z., Purushothaman, S., Rotaru, A., Spǎtaru, A., Stanic, G., Vencelj, M., Weick, H., and Yu, J.

Published
2024
Full Text
View/download PDF

5. Diverse mechanisms in proton knockout reactions from the Borromean nucleus 17Ne

Author

Wamers, F., Lehr, C., Marganiec-Gałązka, J., Aksouh, F., Aksyutina, Yu., Alvarez-Pol, H., Atar, L., Aumann, T., Beceiro-Novo, S., Bertulani, C. A., Boretzky, K., Borge, M. J. G., Caesar, C., Chartier, M., Chatillon, A., Chulkov, L. V., Cortina-Gil, D., Fernández, P. Díaz, Emling, H., Ershova, O., Fraile, L. M., Fynbo, H. O. U., Galaviz, D., Geissel, H., Heil, M., Holl, M., Johansson, H. T., Jonson, B., Karagiannis, C., Kiselev, O. A., Kratz, J. V., Kulessa, R., Kurz, N., Langer, C., Lantz, M., Le Bleis, T., Lemmon, R., Litvinov, Yu. A., Mahata, K., Müntz, C., Nilsson, T., Nociforo, C., Ott, W., Panin, V., Paschalis, S., Perea, A., Plag, R., Reifarth, R., Richter, A., Riisager, K., Rodriguez-Tajes, C., Rossi, D., Savran, D., Scheit, H., Schrieder, G., Schrock, P., Simon, H., Stroth, J., Sümmerer, K., Tengblad, O., Weick, H., and Wimmer, C.

Published
2023
Full Text
View/download PDF

7. The WASA-FRS project at GSI and its perspective

Author

Saito, T.R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K.-H., Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontán, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., González, A. Graña, Haettner, E., Harakeh, M.N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D.J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H.J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodríguez-Sánchez, J.L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tanaka, Y.K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., and Zhao, J.

Published
2023
Full Text
View/download PDF

9. Storage, accumulation and deceleration of secondary beams for nuclear astrophysics

Author

Glorius, J., Litvinov, Yu. A., Aliotta, M., Amjad, F., Brückner, B., Bruno, C.G., Chen, R., Davinson, T., Dellmann, S.F., Dickel, T., Dillmann, I., Erbacher, P., Forstner, O., Geissel, H., Griffin, C.J., Grisenti, R., Gumberidze, A., Haettner, E., Hess, R., Hillenbrand, P.-M., Hornung, C., Joseph, R., Jurado, B., Kazanseva, E., Knöbel, R., Kostyleva, D., Kozhuharov, C., Kuzminchuk, N., Langer, C., Leckenby, G., Lederer-Woods, C., Lestinsky, M., Litvinov, S., Löher, B., Lorenz, B., Lorenz, E., Marsh, J., Menz, E., Morgenroth, T., Mukha, I., Petridis, N., Popp, U., Psaltis, A., Purushothaman, S., Reifarth, R., Rocco, E., Roy, P., Sanjari, M.S., Scheidenberger, C., Sguazzin, M., Sidhu, R.S., Spillmann, U., Steck, M., Stöhlker, T., Swartz, J.A., Tanaka, Y.K., Törnqvist, H., Varga, L., Vescovi, D., Weick, H., Weigand, M., Woods, P.J., Yamaguchi, T., and Zhao, J.

Published
2023
Full Text
View/download PDF

10. Production and separation of positron emitters for hadron therapy at FRS-Cave M

Author

Haettner, E., Geissel, H., Franczak, B., Kostyleva, D., Purushothaman, S., Tanaka, Y.K., Amjad, F., Boscolo, D., Dickel, T., Graeff, C., Hessler, C., Hornung, C., Kazantseva, E., Kuzminchuk, N., Morrissey, D., Mukha, I., Pietri, S., Rocco, E., Roy, P., Roesch, H., Schuy, C., Schütt, P., Weber, U., Weick, H., Zhao, J., Durante, M., Parodi, K., and Scheidenberger, C.

Published
2023
Full Text
View/download PDF

12. Matter radius of the doubly-magic 56Ni measured in a storage ring

Author

von Schmid, M., Aumann, T., Bagchi, S., Bönig, S., Csatlós, M., Dillmann, I., Dimopoulou, C., Egelhof, P., Eremin, V., Furuno, T., Geissel, H., Gernhäuser, R., Harakeh, M. N., Hartig, A.-L., Ilieva, S., Kalantar-Nayestanaki, N., Kiselev, O., Kollmus, H., Kozhuharov, C., Krasznahorkay, A., Kröll, Th., Kuilman, M., Litvinov, S., Litvinov, Yu. A., Mahjour-Shafiei, M., Mutterer, M., Nagae, D., Najafi, M. A., Nociforo, C., Nolden, F., Popp, U., Rigollet, C., Roth, R., Roy, S., Scheidenberger, C., Steck, M., Streicher, B., Stuhl, L., Thürauf, M., Uesaka, T., Weick, H., Winfield, J. S., Winters, D., Woods, P. J., Yamaguchi, T., Yue, K., Zamora Cardona, J. C., and Zenihiro, J.

Published
2023
Full Text
View/download PDF

13. First coupling of the FRS particle identification and the FRS-Ion Catcher data acquisition systems: The case of 109In

Author

Spătaru, A., Hornung, C., Dickel, T., Haettner, E., Pietri, S., Ayet San Andrés, S., Bagchi, S., Balabanski, D.L., Bergmann, J., Ebert, J., Finley, A., Geissel, H., Greiner, F., Hall, O., Kaur, S., Lippert, W., Miskun, I., Otto, J.-H., Plaß, W.R., Prochazka, A., Purushothaman, S., Rappold, C., Rink, A.-K., Scheidenberger, C., Tanaka, Y.K., Toernqvist, H., Weick, H., and Winfield, J.S.

Published
2022
Full Text
View/download PDF

14. Nuclear matter distributions in the neutron-rich carbon isotopes 14−17C from intermediate-energy proton elastic scattering in inverse kinematics

Author

Dobrovolsky, A.V., Korolev, G.A., Tang, S., Alkhazov, G.D., Colò, G., Dillmann, I., Egelhof, P., Estradé, A., Farinon, F., Geissel, H., Ilieva, S., Inglessi, A.G., Ke, Y., Khanzadeev, A.V., Kiselev, O.A., Kurcewicz, J., Chung, L.X., Litvinov, Yu.A., Petrov, G.E., Prochazka, A., Scheidenberger, C., Sergeev, L.O., Simon, H., Takechi, M., Volkov, V., Vorobyov, A.A., Weick, H., and Yatsoura, V.I.

Published
2021
Full Text
View/download PDF

17. Study of light hypernuclei in Europe: The hypertriton and nnΛ puzzles

Author

Rappold C., Achenbach P., Alibrahim Alfaki H., Amjad F., Armstrong M., Behr K.-H., Benlliure J., Brencic Z., Dickel T., Drozd V., Dubey S., Ekawa H., Escrig S., Feijoo-Fontan M., Fujioka H., Gao Y., Geissel H., Goldenbaum F., Graña Gonzalez A., Haettner E., Harakeh M. N., He Y., Heggen H., Hornung C., Hubbard N., Itahashi K., Iwasaki M., Kalantar-Nayestanaki N., Kasagi A., Kavatsyuk M., Kazantseva E., Khreptak A., Kindler B., Knoebel R., Kollmus H., Kostyleva D., Kraft-Bermuth S., Kurz N., Liu E., Lommel B., Metag V., Minami S., Morrissey D.J., Moskal P., Mukha I., Muneem A., Nakagawa M., Nakazawa K., Nociforo C., Ong H.J., Pietri S., Pochodzalla J., Purushothaman S., Rocco E., Rodríguez-Sánchez J.L., Roy P., Ruber R., Saito T.R., Schadmand S., Scheidenberger C., Schwarz P., Sekiya R., Serdyuk V., Skurzok M., Streicher B., Suzuki K., Szczepanczyk B., Tanaka Y. K., Tang X., Tortorelli N., Vencelj M., Wang H., Weber T., Weick H., Will M., Wimmer K., Yamamoto A., Yanai A., Yoshida J., and Zhao J.

Subjects
Physics, QC1-999
Abstract

The current understanding of light hypernuclei, which are sub-atomic nuclei with strangeness, is being challenged and studied in detail by several European research groups and collaborations. In recent years, studies of hypernuclei using high-energy heavy ion beams have reported unexpected results on the three-body hypernuclear state 3ΛH, named the hypertriton. For some time, reports of a shorter lifetime and larger binding energy than what was previously accepted have created a puzzling situation for its theoretical description; this is known as the "hypertriton puzzle". With the inclusion of the most recent experimental measurements, the current status of the hypertriton puzzle is evolving. Additionally, the possible neutral bound state of a Λ hyperon with two neutrons, nnΛ, has raised questions about our understanding of the formation of light hypernuclei either in bound or resonance states. These results have initiated several ongoing experimental programs all over the world to study these three-body hypernuclear states precisely. We are studying these light hypernuclear states by employing heavy ion beams at 2AGeV on a fixed carbon target with the WASA detector system and the Fragment Separator (FRS) at GSI. The WASA-FRS experimental campaign was performed during the first quarter of 2022, and this paper presents a short overview of the campaign and how it seeks to tackle the hypertriton and nnΛ puzzles. Data analysis is ongoing, and several preliminary results will be reported.

Published
2023
Full Text
View/download PDF

18. Proton capture on stored radioactive 118Te ions

Author

Dellmann S. F., Glorius J., Litvinov Y. A., Reifarth R., Al-Khasawneh K., Aliotta M., Bott L., Brückner B., Bruno C., Chen R. J., Davinson T., Dickel T., Dillmann I, Dmytriev D., Erbacher P., Freire-Fernández D., Forstner O., Geissel H., Göbel K., Griffin C. J., Grisenti R., Gumberidze A., Haettner E., Hagmann S., Heil M., Heß R., Hillenbrand P.-M., Joseph R., Jurado B., Kozhuharov C., Kulikov I., Löher B., Langer C., Leckenby G., Lederer-Woods C., Lestinsky M., Litvinov S., Lorenz B. A., Lorenz E., Marsh J., Menz E., Morgenroth T., Petridis N., Pibernat J., Popp U., Psaltis A., Sanjari S., Scheidenberger C., Sguazzin M., Sidhu R. S., Spillmann U., Steck M., Stöhlker T., Surzhykov A., Swartz J. A., Törnqvist H., Varga L., Vescovi D., Weick H., Weigand M., Woods P., Xing Y., and Yamaguchi T.

Subjects
Physics, QC1-999
Abstract

Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the 118Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped 118Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.

Published
2023
Full Text
View/download PDF

20. New ion-optical operating modes of the BigRIPS and ZeroDegree spectrometer for the production and separation of high-quality rare isotopes beams and high-resolution spectrometer experiments

Author

Takeda, H., Tanaka, Y.K., Suzuki, H., Ahn, D.S., Franczak, B., Fukuda, N., Geissel, H., Haettner, E., Inabe, N., Itahashi, K., Komatsubara, T., Kubo, T., Kusaka, K., Matsumoto, S.Y., Murai, D., Nishi, T., Ohtake, M., Scheidenberger, C., Shimizu, Y., Sumikama, T., Ueno, H., Uesaka, T., Yanagisawa, Y., and Yoshida, K.

Published
2020
Full Text
View/download PDF

21. Nuclear-matter distribution in the proton-rich nuclei 7Be and 8B from intermediate energy proton elastic scattering in inverse kinematics

Author

Dobrovolsky, A.V., Korolev, G.A., Inglessi, A.G., Alkhazov, G.D., Colò, G., Dillmann, I., Egelhof, P., Estradé, A., Farinon, F., Geissel, H., Ilieva, S., Ke, Y., Khanzadeev, A.V., Kiselev, O.A., Kurcewicz, J., Le, X.C., Litvinov, Yu.A., Petrov, G.E., Prochazka, A., Scheidenberger, C., Sergeev, L.O., Simon, H., Takechi, M., Tang, S., Volkov, V., Vorobyov, A.A., Weick, H., and Yatsoura, V.I.

Published
2019
Full Text
View/download PDF

22. Quasi-real-time range monitoring by in-beam PET: a case for 15O.

Author

Purushothaman, S., Kostyleva, D., Dendooven, P., Haettner, E., Geissel, H., Schuy, C., Weber, U., Boscolo, D., Dickel, T., Graeff, C., Hornung, C., Kazantseva, E., Kuzminchuk-Feuerstein, N., Mukha, I., Pietri, S., Roesch, H., Tanaka, Y. K., Zhao, J., Durante, M., and Parodi, K.

Subjects
LINEAR energy transfer, ION beams, POSITRON annihilation, POSITRON emission tomography, POSITRONS, PRODUCTION methods
Abstract

A fast and reliable range monitoring method is required to take full advantage of the high linear energy transfer provided by therapeutic ion beams like carbon and oxygen while minimizing damage to healthy tissue due to range uncertainties. Quasi-real-time range monitoring using in-beam positron emission tomography (PET) with therapeutic beams of positron-emitters of carbon and oxygen is a promising approach. The number of implanted ions and the time required for an unambiguous range verification are decisive factors for choosing a candidate isotope. An experimental study was performed at the FRS fragment-separator of GSI Helmholtzzentrum für Schwerionenforschung GmbH, Germany, to investigate the evolution of positron annihilation activity profiles during the implantation of 14 O and 15 O ion beams in a PMMA phantom. The positron activity profile was imaged by a dual-panel version of a Siemens Biograph mCT PET scanner. Results from a similar experiment using ion beams of carbon positron-emitters 11 C and 10 C performed at the same experimental setup were used for comparison. Owing to their shorter half-lives, the number of implanted ions required for a precise positron annihilation activity peak determination is lower for 10 C compared to 11 C and likewise for 14 O compared to 15 O, but their lower production cross-sections make it difficult to produce them at therapeutically relevant intensities. With a similar production cross-section and a 10 times shorter half-life than 11 C, 15 O provides a faster conclusive positron annihilation activity peak position determination for a lower number of implanted ions compared to 11 C. A figure of merit formulation was developed for the quantitative comparison of therapy-relevant positron-emitting beams in the context of quasi-real-time beam monitoring. In conclusion, this study demonstrates that among the positron emitters of carbon and oxygen, 15 O is the most feasible candidate for quasi-real-time range monitoring by in-beam PET that can be produced at therapeutically relevant intensities. Additionally, this study demonstrated that the in-flight production and separation method can produce beams of therapeutic quality, in terms of purity, energy, and energy spread. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

24. Accurate simultaneous lead stopping power and charge-state measurements in gases and solids: Benchmark data for basic atomic theory and nuclear applications

Author

Ishikawa, S., Geissel, H., Purushothaman, S., Weick, H., Haettner, E., Iwasa, N., Scheidenberger, C., Sørensen, A.H., Tanaka, Y.K., Abel, T., Äystö, J., Bagchi, S., Dickel, T., Drozd, V., Franczak, B., Greiner, F., Harakeh, M.N., Kalantar-Nayestanaki, N., Kindler, B., Knöbel, R., Kostyleva, D., Kraft-Bermuth, S., Kuzminchuk, N., Lamour, E., Lommel, B., Mukha, I., Patyk, Z., Pietri, S., Schaumann, G., and Zhao, J.

Published
2023
Full Text
View/download PDF

25. Independent isotopic fission yields of 252Cf spontaneous fission via mass measurements at the FRS Ion Catcher.

Author

Waschitz, Y., Amanbayev, D., Spătaru, A., Mardor, I., Dickel, T., Cohen, E. O., Aviv, O., Ayet San Andrés, S., Balabanski, D. L., Beck, S., Bergmann, J., Brencic, Z., Constantin, P., Dehghan, M., Geissel, H., Gröf, L., Hornung, C., Kalantar-Nayestanaki, N., Kripko-Koncz, G., and Miskun, I.

Subjects
NUCLEAR fission, SPONTANEOUS fission, TIME-of-flight mass spectrometers, NUCLEAR isobars, CHEMICAL reactions
Abstract

We present first preliminary results of a novel method for measuring independent isotopic fission yields (IIFYs) of spontaneous fission (SF) via direct mass measurements, at the FRS Ion Catcher (FRS-IC) at GSI. Fission products were generated from a 252Cf source installed in a cryogenic stopping cell, and were identified and counted with the multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) of the FRS-IC, utilizing well-established measurement and data analysis methods. The MR-TOF-MS resolves isobars unambiguously, even with limited statistics, and its non-scanning nature ensures minimal relative systematic uncertainties amongst fission products. The analysis for extracting IIFYs includes isotope-dependent efficiency corrections for all components of the FRS-IC. In particular, we applied a self-consistent technique that takes into account the element-dependent survival efficiencies in the CSC, due to chemical reactions with the buffer gas. Our IIFY results, which cover several tens of fission products in the less-accessible high-mass peak (Z = 56 to 63) down to fission yields at the level of 10−5, are generally similar to those of the nuclear database ENDF/B-VII.0. Nevertheless, they reveal some structures that are not observed in the database smooth trends. These are the first results of a planned campaign to investigate IIFY distributions of spontaneous fission at the FRS-IC. Upcoming experiments will extend our results to wider Z and N ranges, lower fission yields, and other spontaneously-fissioning actinides. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

27. Experimental program of the Super-FRS Collaboration at FAIR and developments of related instrumentation

Author

Äystö, J., Behr, K.-H., Benlliure, J., Bracco, A., Egelhof, P., Fomichev, A., Galès, S., Geissel, H., Grahn, T., Grigorenko, L.V., Harakeh, M.N., Hayano, R., Heinz, S., Itahashi, K., Jokinen, A., Kalantar-Nayestanaki, N., Kanungo, R., Lenske, H., Mukha, I., Münzenberg, G., Nociforo, C., Ong, H.J., Pietri, S., Pfützner, M., Plaß, W., Prochazka, A., Purushothaman, S., Saito, T., Scheidenberger, C., Simon, H., Tanihata, I., Terashima, S., Toki, H., Trache, L., Weick, H., Winfield, J.S., Winkler, M., and Zamfir, V.

Published
2016
Full Text
View/download PDF

29. Rate capability of a cryogenic stopping cell for uranium projectile fragments produced at 1000 MeV/u

Author

Reiter, M.P., Rink, A.-K., Dickel, T., Haettner, E., Heiße, F., Plaß, W.R., Purushothaman, S., Amjad, F., Ayet San Andrés, S., Bergmann, J., Blum, D., Dendooven, P., Diwisch, M., Ebert, J., Geissel, H., Greiner, F., Hornung, C., Jesch, C., Kalantar-Nayestanaki, N., Knöbel, R., Lang, J., Lippert, W., Miskun, I., Moore, I.D., Nociforo, C., Petrick, M., Pietri, S., Pfützner, M., Pohjalainen, I., Prochazka, A., Scheidenberger, C., Takechi, M., Tanaka, Y.K., Weick, H., Winfield, J.S., and Xu, X.

Published
2016
Full Text
View/download PDF

30. Proton capture on stored radioactive $^{118}$Te ions

Author

Dellmann, S. F., Glorius, J., Litvinov, Y. A., Reifarth, R., Al-Khasawneh, K., Aliotta, M., Bott, L., Brückner, B., Bruno, C., Chen, R. J., Davinson, T., Dickel, Timo, Dillmann, I., Dmytriev, D., Erbacher, P., Freire-Fernández, D., Forstner, O., Geissel, H., Göbel, Kathrin, Griffin, C. J., Grisenti, Robert, Gumberidze, A., Haettner, E., Hagmann, S., Heil, M., Heß, R., Hillenbrand, P.-M., Joseph, R., Jurado, B., Kozhuharov, C., Kulikov, I., Löher, B., Langer, C., Leckenby, G., Lederer-Woods, C., Lestinsky, M., Litvinov, S., Lorenz, B. A., Lorenz, E., Marsh, J., Menz, E., Morgenroth, T., Petridis, Nikolaos, Pibernat, J., Popp, U., Psaltis, A., Sanjari, S., Scheidenberger, C., Sguazzin, M., Sidhu, R. S., Spillmann, U., Steck, M., Stöhlker, T., Surzhykov, A., Swartz, J. A., Törnqvist, H., Varga, Laszlo, Vescovi, D., Weick, H., Weigand, M., Woods, P., Xing, Y., and Yamaguchi, T.

Abstract

Nuclear Physics in Astrophysics – X, NPA-X 2022, Geneva, Switzerland, 5 Sep 2022 - 9 Sep 2022; The European physical journal / Web of Conferences 279, 11018 (2023). doi:10.1051/epjconf/202327911018, Published by EDP Sciences, Les Ulis

Published
2023
Full Text
View/download PDF

31. Matter radius of the doubly-magic $^{56}Ni$ measured in a storage ring

Author

von Schmid, M., Aumann, Thomas, Bagchi, S., Bönig, S., Csatlós, M., Dillmann, Iris, Dimopoulou, Christina, Egelhof, P., Eremin, V., Furuno, T., Geissel, H., Gernhäuser, R., Harakeh, M. N., Hartig, A.-L., Ilieva, S., Kalantar-Nayestanaki, N., Kiselev, O., Kollmus, H., Kozhuharov, C., Krasznahorkay, A., Kröll, Th., Kuilman, M., Litvinov, S., Litvinov, Yu. A., Mahjour-Shafiei, M., Mutterer, M., Nagae, D., Najafi, M. A., Nociforo, C., Nolden, Fritz, Popp, U., Rigollet, C., Roth, R., Roy, S., Scheidenberger, C., Steck, M., Streicher, B., Stuhl, L., Thürauf, M., Uesaka, T., Weick, H., Winfield, J. S., Winters, D., Woods, P. J., Yamaguchi, T., Yue, K., Zamora Cardona, J. C., and Zenihiro, J.

Subjects
ddc:530
Abstract

The European physical journal / A 59(4), 83 (2023). doi:10.1140/epja/s10050-023-00967-z, Published by Springer, Heidelberg

Published
2023
Full Text
View/download PDF

32. Proton capture on stored radioactive 118Te ions.

Author

Dellmann, S. F., Glorius, J., Litvinov, Y. A., Reifarth, R., Al-Khasawneh, K., Aliotta, M., Bott, L., Brückner, B., Bruno, C., Chen, R. J., Davinson, T., Dickel, T., Dillmann, I, Dmytriev, D., Erbacher, P., Freire-Fernández, D., Forstner, O., Geissel, H., Göbel, K., and Griffin, C. J.

Subjects
PROTON capture, NEUTRON capture, NUCLEAR charge, NUCLEAR fusion, NUCLEAR astrophysics
Abstract

Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the 118Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped 118Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented. [ABSTRACT FROM AUTHOR]

Published
2023
Full Text
View/download PDF

35. Experiments with Stored Highly Charged Ions at the Border between Atomic and Nuclear Physics

Author

Gao, B.S., Najafi, M.A., Atanasov, D.R., Blaum, K., Bosch, F., Brandau, C., Chen, X.C., Dillmann, I., Dimopoulou, Ch., Faestermann, Th., Hillenbrand, P.-M., Geissel, H., Gernhäuser, R., Kozhuharov, C., Kovalenko, O., Litvinov, S.A., Litvinov, Yu.A., Maier, L., Nolden, F., Piotrowski, J., Sanjari, M.S., Spillmann, U., Steck, M., Stöhlker, Th., Trageser, Ch., Tu, X.L., Weick, H., Winckler, N., Xu, H.S., Yamaguchi, T., Yan, X.L., Zhang, Y.H., and Zhou, X.H.

Published
2015
Full Text
View/download PDF

36. High-spin states in Po above the -decaying (18 ) Isomer

Author

Zago, L., Gottardo, A., Valiente-Dobón, J.J., Benzoni, G., Gadea, A., Górska, M., Lunardi, S., Podolyák, Zs., Regan, P.H., Rudolph, D., Algora, A., de Angelis, G., Bazzacco, D., Benlliure, J., Boutachkov, P., Bracco, A., Bruce, A.M., Camera, F., Casarejos, E., Cortés, M.L., Crespi, F.C.L., Corsi, A., Domingo-Pardo, C., Doncel, M., Engert, T., Geissel, H., Gerl, J., Goasduff, A., Goel, N., Grebosz, J., Gregor, E., Habermann, T., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S.M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Morales, A.I., Napoli, D.R., Naqvi, F., Nociforo, C., Pfützner, M., Pietri, S., Prochazka, A., Recchia, F., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Strmen, P., Szarka, I., Ur, C.A., Walker, P.M., Weick, H., Wieland, O., and Wollersheim, H.J.

Abstract

The nucleus $^{212}$Po has been produced through the fragmentation of a $^{238}$U primary beam at 1 GeV/nucleon at GSI, separated with the FRagment Separator, FRS, and studied via isomer γ-decay spectroscopy with the RISING setup. Two delayed previously unknown γ rays have been observed. One has been attributed to the E3 decay of a 21$^{−}$ isomeric state feeding the α-emitting 45-s (18$^{+}$) high-spin isomer. The other γ-ray line has been assigned to the decay of a higher-lying 23$^{+}$ metastable state. These are the first observations of high-spin states above the $^{212}$Po (18$^{+}$) isomer, by virtue of the selectivity obtained via ion-by-ion identification of $^{238}$U fragmentation products. Comparison with shell-model calculations points to shortfalls in the nuclear interactions involving high-j proton and neutron orbitals, to which the region around Z∼100 is sensitive.

Published
2022

37. Proton distribution radii of $^{16-24}$O: signatures of new shell closures and neutron skin

Author

Kaur, S., Kanungo, R., Horiuchi, W., Hagen, G., Holt, J. D., Hu, B. S., Miyagi, T., Suzuki, T., Ameil, F., Atkinson, J., Ayyad, Y., Bagchi, S., Cortina-Gil, D., Dillmann, I., Estradé, A., Evdokimov, A., Farinon, F., Geissel, H., Guastalla, G., Janik, R., Knöbel, R., Kurcewicz, J., Litvinov, Yu. A., Marta, M., Mostazo, M., Mukha, I., Nociforo, C., Ong, H. J., Otsuka, T., Pietri, S., Prochazka, A., Scheidenberger, C., Sitar, B., Strmen, P., Takechi, M., Tanaka, J., Tanihata, I., Terashima, S., Vargas, J., Weick, H., and Winfield, J. S.

Subjects
Nuclear Theory (nucl-th), Neutrons, Nuclear Theory, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Protons, Nuclear Experiment, Carbon
Abstract

The root mean square radii of the proton density distribution in $^{16-24}$O derived from measurements of charge changing cross sections with a carbon target at $\sim$900$A$ MeV together with the matter radii portray thick neutron skin for $^{22 - 24}$O despite $^{22,24}$O being doubly magic. Imprints of the shell closures at $N$ = 14 and 16 are reflected in local minima of their proton radii that provide evidence for the tensor interaction causing them. The radii agree with it ab initio calculations employing the chiral NNLO$_{\mathrm{sat}}$ interaction, though skin thickness predictions are challenged. Shell model predictions agree well with the data., 6 pages, 3 figures, accepted for publication in Physical Review Letters

Published
2022

38. 13,14B(n, γ) via Coulomb Dissociation for Nucleosynthesis towards the r-Process

Author

Altstadt, S.G., Adachi, T., Aksyutina, Y., Alcantara, J., Alvarez-Pol, H., Ashwood, N., Atar, L., Aumann, T., Avdeichikov, V., Barr, M., Beceiro, S., Bemmerer, D., Benlliure, J., Bertulani, C.A., Boretzky, K., Borge, M.J.G., Burgunder, G., Caamano, M., Caesar, C., Casarejos, E., Catford, W., Cederkäll, J., Chakraborty, S., Chartier, M., Chulkov, L., Cortina-Gil, D., Datta Pramanik, U., Diaz Fernandez, P., Dillmann, I., Elekes, Z., Enders, J., Ershova, O., Estrade, A., Farinon, F., Fraile, L.M., Freer, M., Freudenberger, M., Fynbo, H.O.U., Galaviz, D., Geissel, H., Gernhäuser, R., Göbel, K., Golubev, P., Gonzalez Diaz, D., Hagdahl, J., Heftrich, T., Heil, M., Heine, M., Heinz, A., Henriques, A., Holl, M., Holt, J.D., Ickert, G., Ignatov, A., Jakobsson, B., Johansson, H.T., Jonson, B., Kalantar-Nayestanaki, N., Kanungo, R., Kelic-Heil, A., Knöbel, R., Kröll, T., Krücken, R., Kurcewicz, J., Kurz, N., Labiche, M., Langer, C., Le Bleis, T., Lemmon, R., Lepyoshkina, O., Machado, J., Marganiec, J., Maroussov, V., Menéndez, J., Mostazo, M., Movsesyan, A., Najafi, M.A., Nilsson, T., Nociforo, C., Panin, V., Perea, A., Pietri, S., Plag, R., Prochazka, A., Rahaman, A., Rastrepina, G., Reifarth, R., Ribeiro, G., Ricciardi, M.V., Rigollet, C., Riisager, K., Röder, M., Rossi, D., Sanchez del Rio, J., Savran, D., Scheit, H., Schwenk, A., Simon, H., Simonis, J., Sonnabend, K., Sorlin, O., Stoica, V., Streicher, B., Taylor, J., Tengblad, O., Terashima, S., Thies, R., Togano, Y., Uberseder, E., Van de Walle, J., Velho, P., Volkov, V., Wagner, A., Wamers, F., Weick, H., Weigand, M., Wheldon, C., Wilson, G., Wimmer, C., Winfield, J.S., Woods, P., Yakorev, D., Zhukov, M.V., Zilges, A., Zoric, M., and Zuber, K.

Published
2014
Full Text
View/download PDF

39. β-decay and β-delayed Neutron Emission Measurements at GSI-FRS Beyond [formula omitted], for r-process Nucleosynthesis

Author

Caballero-Folch, R., Domingo-Pardo, C., Cortès, G., Taín, J.L., Agramunt, J., Algora, A., Ameil, F., Ayyad, Y., Benlliure, J., Bowry, M., Calviño, F., Cano-Ott, D., Davinson, T., Dillmann, I., Estrade, A., Evdokimov, A., Faestermann, T., Farinon, F., Galaviz, D., García-Ríos, A., Geissel, H., Gelletly, W., Gernhäuser, R., Gómez-Hornillos, M.B., Guerrero, C., Heil, M., Hinke, C., Knöbel, R., Kojouharov, I., Kurcewicz, J., Kurz, N., Litvinov, Y., Maier, L., Marganiec, J., Marta, M., Martínez, T., Montes, F., Mukha, I., Napoli, D.R., Nociforo, C., Paradela, C., Pietri, S., Podolyák, Zs., Prochazka, A., Rice, S., Riego, A., Rubio, B., Schaffner, H., Scheidenberger, C., Smith, K., Sokol, E., Steiger, K., Sun, B., Takechi, M., Testov, D., Weick, H., Wilson, E., Winfield, J.S., Wood, R., Woods, P.J., and Yeremin, A.

Published
2014
Full Text
View/download PDF

40. High-spin states in 212Po above the α-decaying (18+) isomer

Author

Zago, L., Gottardo, A., Valiente-Dobón, J.J., Benzoni, G., Gadea, A., Górska, M., Lunardi, S., Podolyák, Zs., Regan, P.H., Rudolph, D., Algora, A., de Angelis, G., Bazzacco, D., Benlliure, J., Boutachkov, P., Bracco, A., Bruce, A.M., Camera, F., Casarejos, E., Cortés, M.L., Crespi, F.C.L., Corsi, A., Domingo-Pardo, C., Doncel, M., Engert, T., Geissel, H., Gerl, J., Goasduff, A., Goel, N., Grebosz, J., Gregor, E., Habermann, T., Klupp, S., Kojouharov, I., Kurz, N., Lenzi, S.M., Leoni, S., Mandal, S., Menegazzo, R., Mengoni, D., Million, B., Morales, A.I., Napoli, D.R., Naqvi, F., Nociforo, C., Pfützner, M., Pietri, S., Prochazka, A., Recchia, F., Sahin, E., Schaffner, H., Sharma, A., Sitar, B., Siwal, D., Strmen, P., Szarka, I., Ur, C.A., Walker, P.M., Weick, H., Wieland, O., and Wollersheim, H.-J.

Published
2022
Full Text
View/download PDF

42. The FRS Ion Catcher – A facility for high-precision experiments with stopped projectile and fission fragments

Author

Plaß, W.R., Dickel, T., Purushothaman, S., Dendooven, P., Geissel, H., Ebert, J., Haettner, E., Jesch, C., Ranjan, M., Reiter, M.P., Weick, H., Amjad, F., Ayet, S., Diwisch, M., Estrade, A., Farinon, F., Greiner, F., Kalantar-Nayestanaki, N., Knöbel, R., Kurcewicz, J., Lang, J., Moore, I., Mukha, I., Nociforo, C., Petrick, M., Pfützner, M., Pietri, S., Prochazka, A., Rink, A.-K., Rinta-Antila, S., Schäfer, D., Scheidenberger, C., Takechi, M., Tanaka, Y.K., Winfield, J.S., and Yavor, M.I.

Published
2013
Full Text
View/download PDF

44. Nuclear physics experiments with ion storage rings

Author

Litvinov, Yu.A., Bishop, S., Blaum, K., Bosch, F., Brandau, C., Chen, L.X., Dillmann, I., Egelhof, P., Geissel, H., Grisenti, R.E., Hagmann, S., Heil, M., Heinz, A., Kalantar-Nayestanaki, N., Knöbel, R., Kozhuharov, C., Lestinsky, M., Ma, X.W., Nilsson, T., Nolden, F., Ozawa, A., Raabe, R., Reed, M.W., Reifarth, R., Sanjari, M.S., Schneider, D., Simon, H., Steck, M., Stöhlker, T., Sun, B.H., Tu, X.L., Uesaka, T., Walker, P.M., Wakasugi, M., Weick, H., Winckler, N., Woods, P.J., Xu, H.S., Yamaguchi, T., Yamaguchi, Y., and Zhang, Y.H.

Published
2013
Full Text
View/download PDF

46. BigRIPS as a high resolution spectrometer for pionic atoms

Author

Nishi, T., Berg, G.P.A., Dozono, M., Fujioka, H., Fukuda, N., Furuno, T., Geissel, H., Hayano, R.S., Inabe, N., Itahashi, K., Itoh, S., Kameda, D., Kubo, T., Matsubara, H., Michimasa, S., Miki, K., Miya, H., Murakami, Y., Nakamura, M., Nakatsuka, N., Noji, S., Okochi, K., Ota, S., Suzuki, H., Suzuki, K., Takaki, M., Takeda, H., Tanaka, Y.K., Todoroki, K., Tsukada, K., Uesaka, T., Watanabe, Y.N., Weick, H., Yamada, H., and Yoshida, K.

Published
2013
Full Text
View/download PDF

50. Unveiling the two-proton halo character of 17Ne : Exclusive measurement of quasi-free proton-knockout reactions

Author

Lehr, C., Wamers, F., Aksouh, F., Aksyutina, Yu, Álvarez-Pol, H., Atar, L., Aumann, T., Beceiro-Novo, S., Bertulani, C. A., Boretzky, K., Borge, M. J.G., Caesar, C., Chartier, M., Chatillon, A., Chulkov, L. V., Cortina-Gil, D., Díaz Fernández, P., Emling, H., Ershova, O., Fraile, L. M., Fynbo, H. O.U., Galaviz, D., Geissel, H., Heil, M., Heine, M., Hoffmann, D. H.H., Holl, M., Johansson, H. T., Jonson, B., Karagiannis, C., Kiselev, O. A., Kulessa, R., Kurz, N., Langer, C., Lantz, M., Le Bleis, T., Lemmon, R., Litvinov, Yu A., Löher, B., Mahata, K., Marganiec-Galązka, J., Müntz, C., Nilsson, T., Nociforo, C., Ott, W., Panin, V., Paschalis, S., Perea, A., Plag, R., Reifarth, R., Richter, A., Riisager, K., Rodriguez-Tajes, C., Rossi, D., Savran, D., Scheit, H., Schrieder, G., Schrock, P., Simon, H., Stroth, J., Sümmerer, K., Tengblad, O., Weick, H., and Wimmer, C.

Abstract

The proton drip-line nucleus 17Ne is investigated experimentally in order to determine its two-proton halo character. A fully exclusive measurement of the 17Ne(p,2p)16F→15⁎O+p quasi-free one-proton knockout reaction has been performed at GSI at around 500 MeV/nucleon beam energy. All particles resulting from the scattering process have been detected. The relevant reconstructed quantities are the angles of the two protons scattered in quasi-elastic kinematics, the decay of 16F into 15O (including γ decays from excited states) and a proton, as well as the 15O+p relative-energy spectrum and the 16F momentum distributions. The latter two quantities allow an independent and consistent determination of the fractions of l=0 and l=2 motion of the valence protons in 17Ne. With a resulting relatively small l=0 component of only around 35(3)%, it is concluded that 17Ne exhibits a rather modest halo character only. The quantitative agreement of the two values deduced from the energy spectrum and the momentum distributions supports the theoretical treatment of the calculation of momentum distributions after quasi-free knockout reactions at high energies by taking into account distortions based on the Glauber theory. Moreover, the experimental data allow the separation of valence-proton knockout and knockout from the 15O core. The latter process contributes with 11.8(3.1) mb around 40% to the total proton-knockout cross section of 30.3(2.3) mb, which explains previously reported contradicting conclusions derived from inclusive cross sections.

Published
2022

Catalog

Books, media, physical & digital resources
See catalog results