33 results on '"Mollaebrahimi, A."'
Search Results
2. Increasing the rate capability for the cryogenic stopping cell of the FRS Ion Catcher
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Zhao, J. W., Amanbayev, D., Dickel, T., Miskun, I., Plass, W. R., Tortorelli, N., Andres, S. Ayet San, Beck, Soenke, Bergmann, J., Brencic, Z., Constantin, P., Geissel, H., Greiner, F., Groef, L., Hornung, C., Kuzminzuk, N., Kripko-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., Benyaming, D., Harakeh, M. N., Hubbard, N., Kalantar-Nayestanaki, N., Mollaebrahimi, A., Mukhab, I., Narang, M., Niwasel, T., Patyk, Z., Purushothaman, S., Rotaru, A., Spataruf, A., Stanico, G., Vencelje, M., Weickb, H., Yu, J., and Collaboration, the Super-FRS Experiment
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Physics - Instrumentation and Detectors ,Nuclear Experiment - Abstract
At the FRS Ion Catcher (FRS-IC), projectile and fission fragments are produced at relativistic energies, separated in-flight, energy-bunched, slowed down, and thermalized in the ultra-pure helium gas-filled cryogenic stopping cell (CSC). Thermalized nuclei are extracted from the CSC using a combination of DC and RF electric fields and gas flow. This CSC also serves as the prototype CSC for the Super-FRS, where exotic nuclei will be produced at unprecedented rates making it possible to go towards the extremes of the nuclear chart. Therefore, it is essential to efficiently extract thermalized exotic nuclei from the CSC under high beam rate conditions, in order to use the rare exotic nuclei which come as cocktail beams. The extraction efficiency dependence on the intensity of the impinging beam into the CSC was studied with a primary beam of 238U and its fragments. Tests were done with two different versions of the DC electrode structure inside the cryogenic chamber, the standard 1 m long and a short 0.5 m long DC electrode. In contrast to the rate capability of 10^4 ions/s with the long DC electrode, results show no extraction efficiency loss up to the rate of 2x10^5 ions/s with the new short DC electrode. This order of magnitude increase of the rate capability paves the way for new experiments at the FRS-IC, including exotic nuclei studies with in-cell multi-nucleon transfer reactions. The results further validate the design concept of the CSC for the Super-FRS, which was developed to effectively manage beams of even higher intensities.
- Published
- 2023
3. Recent Upgrades of the Gas Handling System for the Cryogenic Stopping Cell of the FRS Ion Catcher
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Mollaebrahimi, A., Amanbayev, D., Andrés, S. Ayet San, Beck, S., Bergmann, J., Dickel, T., Geissel, H., Hornung, C., Kalantar-Nayestanaki, N., Kripko-Koncz, G., Miskun, I., Nichita, D., Plaß, W. R., Pohjalainen, I., Scheidenberger, C., Stanic, G., State, A., and Zhao, J.
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Physics - Instrumentation and Detectors ,Nuclear Experiment - Abstract
In this paper, the major upgrades and technical improvements of the buffer gas handling system for the cryogenic stopping cell of the FRS Ion Catcher at GSI/FAIR (in Darmstadt, Germany) are described. The upgrades include implementation of new gas lines and gas purifiers to achieve a higher buffer gas cleanliness for a more efficient extraction of reactive ions as well as suppression of the molecular background ionized in the stopping cell. Furthermore, additional techniques have been implemented for improved monitoring and quantification of the purity of the helium buffer gas.
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- 2023
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4. Mean range bunching of exotic nuclei produced by in-flight fragmentation and fission -- Stopped-beam experiments with increased efficiency
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Dickel, Timo, Hornung, Christine, Amanbayev, Daler, Andres, Samuel Ayet San, Beck, Soenke, Bergmann, Julian, Geissel, Hans, Gerl, Juergen, Gorska, Magdalena, Groef, Lizzy, Haettner, Emma, Hucka, Jan-Paul, Kostyleva, Daria A., Kripko-Koncz, Gabriella, Mollaebrahimi, Ali, Mukha, Ivan, Pietri, Stephane, Plaß, Wolfgang R., Podolyak, Zsolt, Purushothaman, Sivaji, Reiter, Moritz Pascal, Roesch, Heidi, Scheidenberger, Christoph, Tanaka, Yoshiki K., Weick, Helmut, Zhao, Jianwei, and Collaboration, Super-FRS Experiment
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Physics - Instrumentation and Detectors ,Nuclear Experiment - Abstract
The novel technique of mean range bunching has been developed and applied at the projectile fragment separator FRS at GSI in four experiments of the FAIR phase-0 experimental program. Using a variable degrader system at the final focal plane of the FRS, the ranges of the different nuclides can be aligned, allowing to efficiently implant a large number of different nuclides simultaneously in a gas-filled stopping cell or an implantation detector. Stopping and studying a cocktail beam overcomes the present limitations of stopped-beam experiments. The conceptual idea of mean range bunching is described and illustrated using simulations. In a single setting of the FRS, 37 different nuclides were stopped in the cryogenic stopping cell and were measured in a single setting broadband mass measurement with the multiple-reflection time-of-flight mass spectrometer of the FRS Ion Catcher.
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- 2023
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5. Studying Gamow-Teller transitions and the assignment of isomeric and ground states at $N=50$
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Mollaebrahimi, Ali, Hornung, Christine, Dickel, Timo, Amanbayev, Daler, Kripko-Koncz, Gabriella, Plaß, Wolfgang R., Andrés, Samuel Ayet San, Beck, Sönke, Blazhev, Andrey, Bergmann, Julian, Geissel, Hans, Górska, Magdalena, Grawe, Hubert, Greiner, Florian, Haettner, Emma, Kalantar-Nayestanaki, Nasser, Miskun, Ivan, Nowacki, Frédéric, Scheidenberger, Christoph, Bagchi, Soumya, Balabanski, Dimiter L., Brencic, Ziga, Charviakova, Olga, Constantin, Paul, Dehghan, Masoumeh, Ebert, Jens, Gröf, Lizzy, Hall, Oscar, Harakeh, Muhsin N., Kaur, Satbir, Kankainen, Anu, Knöbel, Ronja, Kostyleva, Daria A., Kurkova, Natalia, Kuzminchuk, Natalia, Mardor, Israel, Nichita, Dragos, Otto, Jan-Hendrik, Patyk, Zygmunt, Pietri, Stephane, Purushothaman, Sivaji, Reiter, Moritz Pascal, Rink, Ann-Kathrin, Roesch, Heidi, Spătaru, Anamaria, Stanic, Goran, State, Alexandru, Tanaka, Yoshiki K., Vencelj, Matjaz, Weick, Helmut, Winfield, John S., Yavor, Michael I., and Zhao, Jianwei
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Nuclear Experiment - Abstract
Direct mass measurements of neutron-deficient nuclides around the $N=50$ shell closure below $^{100}$Sn were performed at the FRS Ion Catcher (FRS-IC) at GSI, Germany. The nuclei were produced by projectile fragmentation of $^{124}$Xe, separated in the fragment separator FRS and delivered to the FRS-IC. The masses of 14 ground states and two isomers were measured with relative mass uncertainties down to $1\times 10^{-7}$ using the multiple-reflection time-of-flight mass spectrometer of the FRS-IC, including the first direct mass measurements of $^{98}$Cd and $^{97}$Rh. A new $Q_\mathrm{EC} = 5437\pm67$ keV was obtained for $^{98}$Cd, resulting in a summed Gamow-Teller (GT) strength for the five observed transitions ($0^+\longrightarrow1^+$) as $B(\text{GT})=2.94^{+0.32}_{-0.28}$. Investigation of this result in state-of-the-art shell model approaches sheds light into a better understanding of the GT transitions in even-even isotones at $N=50$. The excitation energy of the long-lived isomeric state in $^{94}$Rh was determined for the first time to be $293\pm 21$ keV. This, together with the shell model calculations, allows the level ordering in $^{94}$Rh to be understood.
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- 2022
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6. Increasing the rate capability for the cryogenic stopping cell of the FRS Ion Catcher
- Author
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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.
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- 2024
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7. Mass measurements of As, Se and Br nuclei and their implication on the proton-neutron interaction strength towards the N=Z line
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Mardor, I., Andres, S. Ayet San, Dickel, T., Amanbayev, D., Beck, S., Bergmann, J., Geissel, H., Grof, L., Haettner, E., Hornung, C., Kalantar-Nayestanaki, N., Kripko-Koncz, G., Miskun, I., Mollaebrahimi, A., Plass, W. R., Scheidenberger, C., Weick, H., Bagchi, S., Balabanski, D. L., Bezbakh, A. A., Brencic, Z., Charviakova, O., Chudoba, V., Constantin, P., Dehghan, M., Fomichev, A. S., Grigorenko, L. V., Hall, O., Harakeh, M. N., Hucka, J. P., Kankainen, A., Kiselev, O., Knobel, R., Kostyleva, D. A., Krupko, S. A., Kurkova, N., Kuzminchuk, N., Mukha, I., Muzalevskii, I. A., Nichita, D., Nociforo, C., Patyk, Z., Pfutzner, M., Pietri, S., Purushothaman, S., Reiter, M. P., Roesch, H., Schirru, F., Sharov, P. G., Spataru, A., Stanic, G., State, A., Tanaka, Y. K., Vencelj, M., Yavor, M. I., and Zhao, J.
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Nuclear Experiment ,Nuclear Theory - Abstract
Mass measurements of the $^{69}$As, $^{70,71}$Se and $^{71}$Br isotopes, produced via fragmentation of a $^{124}$Xe primary beam at the FRS at GSI, have been performed with the multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) of the FRS Ion Catcher with an unprecedented mass resolving power of almost 1,000,000. For the $^{69}$As isotope, this is the first direct mass measurement. A mass uncertainty of 22 keV was achieved with only 10 events. For the $^{70}$Se isotope, a mass uncertainty of 2.6 keV was obtained, corresponding to a relative accuracy of $\delta$m/m = 4.0$\times 10^{-8}$, with less than 500 events. The masses of the $^{71}$Se and $^{71}$Br isotopes were measured with an uncertainty of 23 and 16 keV, respectively. Our results for the $^{70,71}$Se and $^{71}$Br isotopes agree with the 2016 Atomic Mass Evaluation, and our result for the $^{69}$As isotope resolves the discrepancy between previous indirect measurements. We measured also the mass of $^{14}$N$^{15}$N$^{40}$Ar (A=69) with a relative accuracy of $\delta$m/m = 1.7$\times 10^{-8}$, the highest yet achieved with a MR-TOF-MS. Our results show that the measured restrengthening of the proton-neutron interaction ($\delta$V$_{pn}$) for odd-odd nuclei at the N=Z line above Z=29 (recently extended to Z=37) is hardly evident at N-Z=2, and not evident at N-Z=4. Nevertheless, detailed structure of $\delta$V$_{pn}$ along the N-Z=2 and N-Z=4 lines, confirmed by our mass measurements, may provide a hint regarding the ongoing $\approx$500 keV discrepancy in the mass value of the $^{70}$Br isotope, which prevents including it in the world average of ${Ft}$-value for superallowed 0$^+\rightarrow$ 0$^+$ $\beta$ decays. The reported work sets the stage for mass measurements with the FRS Ion Catcher of nuclei at and beyond the N=Z line in the same region of the nuclear chart, including the $^{70}$Br isotope., Comment: 11 pages, 4 figures, accepted for publication at Physical Review C
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- 2020
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8. Mass tagging: Verification and calibration of particle identification by high-resolution mass measurements
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Hornung, Christine, Dickel, Timo, Amanbayev, Daler, Ayet San Andrés, Samuel, Balabanski, Dimiter L., Beck, Sönke, Bergmann, Julian, Constantin, Paul, Ebert, Jens, Geissel, Hans, Greiner, Florian, Gröf, Lizzy, Haettner, Emma, Harakeh, Muhsin N., Hucka, Jan-Paul, Kalantar-Nayestanaki, Nasser, Kostyleva, Daria A., Kripko-Koncz, Gabriella, Miskun, Ivan, Mollaebrahimi, Ali, Mukha, Ivan, Münzenberg, Gottfried, Pietri, Stephane, Plaß, Wolfgang R., Purushotaman, Sivaji, Reiter, Moritz Pascal, Rink, Ann-Kathrin, Roesch, Heidi, Scheidenberger, Christoph, Spătaru, Anamaria, Tanaka, Yoshiki K., Weick, Helmut, and Zhao, Jianwei
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- 2023
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9. Studying shape phase transition in even-proton nuclei via mass measurements
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Spataru, Anamaria, primary, Kripko-Koncz, Gabriella, additional, Amanbayev, Daler, additional, Ayet San Andrés, Samuel, additional, Balabanski, Dimiter Loukanov, additional, Beck, Sönke, additional, Bergmann, Julian, additional, Constantin, Paul, additional, Dickel, Timo, additional, Geissel, Hans, additional, Hornung, Christine, additional, kalantar, N, additional, Mardor, Israel, additional, Minkov, Nikolay, additional, Mollaebrahimi, Ali, additional, Plass, Wolfgang Rüdiger, additional, Scheidenberger, Christoph, additional, Wasserhess, Max, additional, and Zhao, Jianwei, additional
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- 2024
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10. Studying Gamow-Teller transitions and the assignment of isomeric and ground states at N = 50
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Ali Mollaebrahimi, Christine Hornung, Timo Dickel, Daler Amanbayev, Gabriella Kripko-Koncz, Wolfgang R. Plaß, Samuel Ayet San Andrés, Sönke Beck, Andrey Blazhev, Julian Bergmann, Hans Geissel, Magdalena Górska, Hubert Grawe, Florian Greiner, Emma Haettner, Nasser Kalantar-Nayestanaki, Ivan Miskun, Frédéric Nowacki, Christoph Scheidenberger, Soumya Bagchi, Dimiter L. Balabanski, Ziga Brencic, Olga Charviakova, Paul Constantin, Masoumeh Dehghan, Jens Ebert, Lizzy Gröf, Oscar Hall, Muhsin N. Harakeh, Satbir Kaur, Anu Kankainen, Ronja Knöbel, Daria A. Kostyleva, Natalia Kurkova, Natalia Kuzminchuk, Israel Mardor, Dragos Nichita, Jan-Hendrik Otto, Zygmunt Patyk, Stephane Pietri, Sivaji Purushothaman, Moritz Pascal Reiter, Ann-Kathrin Rink, Heidi Roesch, Anamaria Spătaru, Goran Stanic, Alexandru State, Yoshiki K. Tanaka, Matjaz Vencelj, Helmut Weick, John S. Winfield, Michael I. Yavor, and Jianwei Zhao
- Subjects
Multiple-reflection time-of-flight mass spectrometer ,N=50 isotones ,Gamow-Teller transition's strength ,Nuclear shell structure ,Nuclear isomers ,Exotic nuclei ,Physics ,QC1-999 - Abstract
Direct mass measurements of neutron-deficient nuclides around the N=50 shell closure below 100Sn were performed at the FRS Ion Catcher (FRS-IC) at GSI, Germany. The nuclei were produced by projectile fragmentation of 124Xe, separated in the fragment separator FRS and delivered to the FRS-IC. The masses of 14 ground states and two isomers were measured with relative mass uncertainties down to 1×10−7 using the multiple-reflection time-of-flight mass spectrometer of the FRS-IC, including the first direct mass measurements of 98Cd and 97Rh. A new QEC=5437±67 keV was obtained for 98Cd, resulting in a summed Gamow-Teller (GT) strength for the five observed transitions (0+⟶1+) as B(GT)=2.94−0.28+0.32. Investigation of this result in state-of-the-art shell model approaches accounting for the first time experimentally observed spectrum of GT transitions points to a perfect agreement for N=50 isotones. The excitation energy of the long-lived isomeric state in 94Rh was determined for the first time to be 293±21 keV. This, together with the shell model calculations, allows the level ordering in 94Rh to be understood.
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- 2023
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11. A compact ion source combining electron-impact and thermal ionization for multiple-reflection time-of-flight mass spectrometry.
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Yu, Jiajun, Mollaebrahimi, Ali, San Andrés, Samuel Ayet, Dickel, Timo, Plaß, Wolfgang R., Wilsenach, Heinrich, Beck, Sönke, Ge, Zhuang, Geissel, Hans, Hornung, Christine, Jacobs, Andrew, Kripko-Koncz, Gabriella, Kwiatkowski, Anna A., Narang, Meetika, Scheidenberger, Christoph, Sequeira, Jaden, and Walls, Coulter
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TIME-of-flight mass spectrometers , *ION sources , *TIME-of-flight mass spectrometry , *ION traps , *DAUGHTER ions - Abstract
A compact ion source combining electron impact and thermal ionization has been developed and commissioned in two Multiple-Reflection Time-Of-Flight Mass Spectrometer (MR-TOF-MS) setups at the Fragment Separator Ion Catcher at the GSI Helmholtz Centre for Heavy Ion Research, Darmstadt, Germany, and at TRIUMF's Ion Trap for Atomic and Nuclear science at TRIUMF Canada's particle accelerator center, Vancouver, Canada. The ion source is notable for its compact dimensions of 50 mm in height and 68 mm in diameter. The ion source is currently in daily operation at both facilities. Design, simulations, and results of combining ions from thermal and electron-impact ionization of different gases (perfluoropropane and sulfur hexafluoride) are presented in this work. The systematic effects of heating power on the thermal source were studied in detail. The source has demonstrated stable and long-term production of reference ions over a wide mass range for the MR-TOF-MS. This versatile ion source has also been used to optimize and investigate the transport of ions with different chemical reactivity and ionization potentials. [ABSTRACT FROM AUTHOR]
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- 2024
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12. A setup to develop novel Chemical Isobaric SEparation (CISE)
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Mollaebrahimi, A., Anđelić, B., Even, J., Block, M., Eibach, M., Giacoppo, F., Kalantar-Nayestanaki, N., Kaleja, O., Kremers, H.R., Laatiaoui, M., and Raeder, S.
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- 2020
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13. Recent Upgrades of the Gas Handling System for the Cryogenic Stopping Cell of the FRS Ion Catcher
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Mollaebrahimi, A., primary, Amanbayev, D., additional, Andrés, S. Ayet San, additional, Beck, S., additional, Bergmann, J., additional, Dickel, T., additional, Geissel, H., additional, Hornung, C., additional, Kalantar-Nayestanaki, N., additional, Kripko-Koncz, G., additional, Miskun, I., additional, Nichita, D., additional, Plaß, W.R., additional, Pohjalainen, I., additional, Scheidenberger, C., additional, Stanic, G., additional, State, A., additional, and Zhao, J., additional
- Published
- 2023
- Full Text
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14. Mass tagging: Verification and calibration of particle identification by high-resolution mass measurements
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Christine Hornung, Timo Dickel, Daler Amanbayev, Samuel Ayet San Andrés, Dimiter L. Balabanski, Sönke Beck, Julian Bergmann, Paul Constantin, Jens Ebert, Hans Geissel, Florian Greiner, Lizzy Gröf, Emma Haettner, Muhsin N. Harakeh, Jan-Paul Hucka, Nasser Kalantar-Nayestanaki, Daria A. Kostyleva, Gabriella Kripko-Koncz, Ivan Miskun, Ali Mollaebrahimi, Ivan Mukha, Gottfried Münzenberg, Stephane Pietri, Wolfgang R. Plaß, Sivaji Purushotaman, Moritz Pascal Reiter, Ann-Kathrin Rink, Heidi Roesch, Christoph Scheidenberger, Anamaria Spătaru, Yoshiki K. Tanaka, Helmut Weick, and Jianwei Zhao
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Nuclear and High Energy Physics ,Instrumentation - Published
- 2023
15. Mean range bunching of exotic nuclei produced by in-flight fragmentation and fission — Stopped-beam experiments with increased efficiency
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Dickel, Timo, primary, Hornung, Christine, additional, Amanbayev, Daler, additional, Ayet San Andrés, Samuel, additional, Beck, Sönke, additional, Bergmann, Julian, additional, Geissel, Hans, additional, Gerl, Jürgen, additional, Górska, Magdalena, additional, Gröf, Lizzy, additional, Haettner, Emma, additional, Hucka, Jan-Paul, additional, Kostyleva, Daria A., additional, Kripko-Koncz, Gabriella, additional, Mollaebrahimi, Ali, additional, Mukha, Ivan, additional, Pietri, Stephane, additional, Plaß, Wolfgang R., additional, Podolyák, Zsolt, additional, Purushothaman, Sivaji, additional, Reiter, Moritz Pascal, additional, Roesch, Heidi, additional, Scheidenberger, Christoph, additional, Tanaka, Yoshiki K., additional, Weick, Helmut, additional, and Zhao, Jianwei, additional
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- 2023
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16. Studying Gamow-Teller transitions and the assignment of isomeric and ground states at N = 50
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Mollaebrahimi, Ali, primary, Hornung, Christine, additional, Dickel, Timo, additional, Amanbayev, Daler, additional, Kripko-Koncz, Gabriella, additional, Plaß, Wolfgang R., additional, Ayet San Andrés, Samuel, additional, Beck, Sönke, additional, Blazhev, Andrey, additional, Bergmann, Julian, additional, Geissel, Hans, additional, Górska, Magdalena, additional, Grawe, Hubert, additional, Greiner, Florian, additional, Haettner, Emma, additional, Kalantar-Nayestanaki, Nasser, additional, Miskun, Ivan, additional, Nowacki, Frédéric, additional, Scheidenberger, Christoph, additional, Bagchi, Soumya, additional, Balabanski, Dimiter L., additional, Brencic, Ziga, additional, Charviakova, Olga, additional, Constantin, Paul, additional, Dehghan, Masoumeh, additional, Ebert, Jens, additional, Gröf, Lizzy, additional, Hall, Oscar, additional, Harakeh, Muhsin N., additional, Kaur, Satbir, additional, Kankainen, Anu, additional, Knöbel, Ronja, additional, Kostyleva, Daria A., additional, Kurkova, Natalia, additional, Kuzminchuk, Natalia, additional, Mardor, Israel, additional, Nichita, Dragos, additional, Otto, Jan-Hendrik, additional, Patyk, Zygmunt, additional, Pietri, Stephane, additional, Purushothaman, Sivaji, additional, Reiter, Moritz Pascal, additional, Rink, Ann-Kathrin, additional, Roesch, Heidi, additional, Spătaru, Anamaria, additional, Stanic, Goran, additional, State, Alexandru, additional, Tanaka, Yoshiki K., additional, Vencelj, Matjaz, additional, Weick, Helmut, additional, Winfield, John S., additional, Yavor, Michael I., additional, and Zhao, Jianwei, additional
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- 2023
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17. Independent isotopic fission yields of 252Cf spontaneous fission via mass measurements at the FRS Ion Catcher
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Waschitz, Y., primary, Amanbayev, D., additional, Spătaru, A., additional, Mardor, I., additional, Dickel, T., additional, Cohen, E. O., additional, Aviv, O., additional, Ayet San Andrés, S., additional, Balabanski, D. L., additional, Beck, S., additional, Bergmann, J., additional, Brencic, Z., additional, Constantin, P., additional, Dehghan, M., additional, Geissel, H., additional, Gröf, L., additional, Hornung, C., additional, Kalantar-Nayestanaki, N., additional, Kripko-Koncz, G., additional, Miskun, I., additional, Mollaebrahimi, A., additional, Nichita, D., additional, Plaß, W. R., additional, Pomp, S., additional, Scheidenberger, C., additional, Solders, A., additional, Stanic, G., additional, Wasserheß, M., additional, Vencelj, M., additional, and Zhao, J., additional
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- 2023
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18. Determining spontaneous fission properties by direct mass measurements with the FRS Ion Catcher
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Mardor Israel, Dickel Timo, Amanbayev Daler, Ayet San Andrés Samuel, Beck Sönke, Benyamin David, Bergmann Julian, Constantin Paul, Cléroux Cuillerier Alexandre, Geissel Hans, Gröff Lizzy, Hornung Christine, Kripko-Koncz Gabriella, Mollaebrahimi Ali, Miskun Ivan, Plaß Wolfgang R., Pomp Stephan, Rotaru Adrian, Scheidenberger Christoph, Stanic Goran, and Will Christian
- Subjects
Physics ,QC1-999 - Abstract
We present a direct method to measure fission product yield distributions (FPY) and isomeric yield ratios (IYR) for spontaneous fission (SF) fragments. These physical properties are of utmost importance to the understanding of basic nuclear physics, the astrophysical rapid neutron capture process ('r process') of nucleosynthesis, neutron star composition, and nuclear reactor safety. With this method, fission fragments are produced by spontaneous fission from a source that is mounted in a cryogenic stopping cell (CSC), thermalized and stopped within it, and then extracted and transported to a multiple-reflection time-of-flight mass-spectrometer (MR-TOF-MS). We will implement the method at the FRS Ion Catcher (FRS-IC) at GSI (Germany), whose MR-TOF-MS relative mass accuracy (~ 10-7) and resolving power (~ 600,000 FWHM) are sufficient to separate all isobars and numerous isomers in the fission fragment realm. The system's essential element independence and its fast simultaneous mass measurement provide a new direct way to measure isotopic FPY distributions, which is complementary to existing methods. It will enable nuclide FPY measurements in the high fission peak, which is hardly accessible by current techniques. The extraction time of the CSC, tens of milliseconds, enables a direct measurement of independent fission yields, and a first study of the temporal dependence of FPY distributions in this duration range. The ability to resolve isomers will further enable direct extraction of numerous IYRs while performing the FPY measurements. The method has been recently demonstrated at the FRS-ICr for SF with a 37 kBq 252Cf fission source, where about 70 different fission fragments have been identified and counted. In the near future, it will be used for systematic studies of SF with a higher-activity 252Cf source and a 248Cm source. The method can be implemented also for neutron induced fission at appropriate facilities.
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- 2020
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19. A sociological review of triple novels of ahlam mosteghanemi (based on community-oriented romanticism)
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Ezzat Mollaebrahimi and Ali Sabbaghian
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algeria ,ahlam mosteghanemi ,criticism ,novel ,sociological review ,Women. Feminism ,HQ1101-2030.7 - Abstract
In a sociological review of novels, the connection between structure and content of the story studied by considering the conditions and changes in society and environment in which they are created, and the modality of artistic reflection of the society in the world of the literary work is reviewed and analyzed. In this article, the authors present an analysis of the works of the famous Algerian female novelist called “Ahlam Mosteghanemi”. As a writer, she is romantic, but she deals with social and cultural situation in her country relying on community-oriented romanticism. She deals with many issues such as women’s rights, cultural poverty, social instability and conflict between tradition and modernity, and also describes the wounds and injuries imposed on the society through the colonialism. Based on the results obtained from this descriptive- analytical research, we come to realize that she could open a horizon to knowing different angles of occupation in Algeria, liberation wars at this country, results of colonization and mustiness of Arab communities. She also tries to keep her obligation to romanticism, using an emotional tone. Although her works have a critic tone, they are drastically different social realism.
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- 2014
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20. Independent isotopic fission yields of 252Cf spontaneous fission via mass measurements at the FRS Ion Catcher
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Y. Waschitz, D. Amanbayev, A. Spătaru, I. Mardor, T. Dickel, E. O. Cohen, O. Aviv, S. Ayet San Andrés, D. L. Balabanski, S. Beck, J. Bergmann, Z. Brencic, P. Constantin, M. Dehghan, H. Geissel, L. Gröf, C. Hornung, N. Kalantar-Nayestanaki, G. Kripko-Koncz, I. Miskun, A. Mollaebrahimi, D. Nichita, W. R. Plaß, S. Pomp, C. Scheidenberger, A. Solders, G. Stanic, M. Wasserheß, M. Vencelj, and J. Zhao
- Subjects
General Medicine - 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.
- Published
- 2023
21. Studying Gamow-Teller transitions and the assignment of isomeric and ground states at $N=50$
- Author
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Ali Mollaebrahimi, Christine Hornung, Timo Dickel, Daler Amanbayev, Gabriella Kripko-Koncz, Wolfgang R. Plaß, Samuel Ayet San Andrés, Sönke Beck, Andrey Blazhev, Julian Bergmann, Hans Geissel, Magdalena Górska, Hubert Grawe, Florian Greiner, Emma Haettner, Nasser Kalantar-Nayestanaki, Ivan Miskun, Frédéric Nowacki, Christoph Scheidenberger, Soumya Bagchi, Dimiter L. Balabanski, Ziga Brencic, Olga Charviakova, Paul Constantin, Masoumeh Dehghan, Jens Ebert, Lizzy Gröf, Oscar Hall, Muhsin N. Harakeh, Satbir Kaur, Anu Kankainen, Ronja Knöbel, Daria A. Kostyleva, Natalia Kurkova, Natalia Kuzminchuk, Israel Mardor, Dragos Nichita, Jan-Hendrik Otto, Zygmunt Patyk, Stephane Pietri, Sivaji Purushothaman, Moritz Pascal Reiter, Ann-Kathrin Rink, Heidi Roesch, Anamaria Spătaru, Goran Stanic, Alexandru State, Yoshiki K. Tanaka, Matjaz Vencelj, Helmut Weick, John S. Winfield, Michael I. Yavor, Jianwei Zhao, HEP, INSPIRE, and Helsinki Institute of Physics
- Subjects
nuclear isomers ,Nuclear and High Energy Physics ,Multiple-reflection time-of-flight mass ,Nuclear shell structure ,multiple-reflection time-of-flight mass ,[PHYS.NEXP] Physics [physics]/Nuclear Experiment [nucl-ex] ,N = 50 isotones ,FOS: Physical sciences ,Gamow-Teller transition?s strength ,114 Physical sciences ,Spectrometer ,exotic nuclei ,Gamow-Teller transition's strength ,nuclear shell structure ,Nuclear isomers ,spectrometer ,N=50 isotones ,Nuclear Experiment (nucl-ex) ,ydinfysiikka ,Nuclear Experiment ,Exotic nuclei - Abstract
Direct mass measurements of neutron-deficient nuclides around the N=50 shell closure below $^{100}$Sn were performed at the FRS Ion Catcher (FRS-IC) at GSI, Germany. The nuclei were produced by projectile fragmentation of $^{124}$Xe, separated in the fragment separator FRS and delivered to the FRS-IC. The masses of 14 ground states and two isomers were measured with relative mass uncertainties down to 1×10−7 using the multiple-reflection time-of-flight mass spectrometer of the FRS-IC, including the first direct mass measurements of $^{98}$Cd and $^{97}$Rh. A new QEC=5437±67 keV was obtained for $^{98}$Cd, resulting in a summed Gamow-Teller (GT) strength for the five observed transitions (0+⟶1+) as B(GT)=2.94−0.28+0.32. Investigation of this result in state-of-the-art shell model approaches accounting for the first time experimentally observed spectrum of GT transitions points to a perfect agreement for N=50 isotones. The excitation energy of the long-lived isomeric state in $^{94}$Rh was determined for the first time to be 293±21 keV. This, together with the shell model calculations, allows the level ordering in $^{94}$Rh to be understood.
- Published
- 2022
22. A setup to develop novel Chemical Isobaric SEparation (CISE)
- Author
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M. Eibach, O. Kaleja, F. Giacoppo, A. Mollaebrahimi, M. Laatiaoui, B. Anđelić, Julia Even, H.R. Kremers, Nasser Kalantar-Nayestanaki, S. Raeder, Michael Block, and Research unit Nuclear & Hadron Physics
- Subjects
Inert ,Nuclear and High Energy Physics ,Gas catcher ,Mass spectrometry ,Nuclear engineering ,Extraction (chemistry) ,Chemical reaction ,Ion ,Gas-phase chemistry ,Chemical isobaric separation ,Impurity ,STOPPING CELL ,Isobar ,Isobaric process ,Instrumentation ,Ion guide - Abstract
Gas catchers are widely used to thermalize nuclear reaction products and subsequently extract them for precision measurements. However, impurities in the inert stopping gas can chemically react with the ions and thus influence the extraction efficiency. So far, chemical reactions in the gas-catcher have not been investigated in detail. Therefore, we are currently building a new setup to develop Chemical Isobaric SEparation (CISE) with the aim to understand the chemistry inside the gas-catcher and to explore its potential as a new technique for separation of isobars. In this paper, we give a short description of the setup together with the ion transportation studies performed via ion-optics simulations.
- Published
- 2020
23. Analysis and Readout of Gender Role in Sentimental Poems of Palestine
- Author
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Ezzat Mollaebrahimi and Habib Keshavarz
- Subjects
female poets ,ghazal ,male poets. ,palestine ,sentimental poems ,Women. Feminism ,HQ1101-2030.7 - Abstract
Palestinian women have not only collaborated with men in issues such as social, political and cultural affairs but also in literary fields. They have even been pioneer in some fields. A number of senses of contemporary Palestinian poetries have been considered by both genders which include different types of sentimental poetries such as ghazals and love poems. Although ghazal has been among the most important types of Palestinian poetry for long, there are certain differences between female ghazals and the male ones, which is an indication of physical and psychological differences between them. This research tries to study those differences and to find out the reasons. The research methods have been documentary and library methods. As a result women, in their poems, pay less attention to physical and beauty attractions in their love poems. Instead, sentimental symbols have been considered by female poets and they use more codes and metaphors compared to male poets.
- Published
- 2012
- Full Text
- View/download PDF
24. Mass and half-life measurements of neutron-deficient isotopes with A~100 and developments for the FRS Ion Catcher and CISE
- Author
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Mollaebrahimi, Ali and Mollaebrahimi, Ali
- Abstract
The goal of this thesis was to develop new methods to study the nuclear structure for A~100 neutron-deficient isotopes by means of half-life and mass measurements. The thesis is divided into three main sub-projects. First, the initial developments of the CISE setup for chemical isobaric separation of ions. Second, the developments in the gas-handling system of the Cryogenic Stopping Cell (CSC) of the FRS-IC setup. Third, half-life and mass measurements of medium-heavy and heavy nuclei by using MR-TOF-MS technique at the FRS-IC setup.
- Published
- 2021
25. Mass measurements of As, Se, and Br nuclei, and their implication on the proton-neutron interaction strength toward the N=Z line
- Author
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Emma Haettner, Zygmunt Patyk, Mikhail I. Yavor, Daler Amanbayev, D. Nichita, Christoph Scheidenberger, S. Pietri, Timo Dickel, Sönke Beck, Helmut Weick, D. A. Kostyleva, A. A. Bezbakh, Anu Kankainen, Jean-Paul Hucka, O. Charviakova, S. A. Krupko, G. Stanic, C. Nociforo, S. Purushothaman, I. A. Muzalevskii, Julian Bergmann, M. N. Harakeh, P. G. Sharov, Nasser Kalantar-Nayestanaki, M. Dehghan, Paul Constantin, R. Knöbel, V. Chudoba, Christine Hornung, M. Vencelj, A. State, O. Hall, G. Kripko-Koncz, Moritz P. Reiter, A. Mollaebrahimi, M. Pfützner, S. Ayet San Andrés, Wolfgang R. Plaß, F. Schirru, N. Kurkova, L. Gröf, L. V. Grigorenko, N. Kuzminchuk, D. L. Balabanski, A. S. Fomichev, J. Zhao, Y. K. Tanaka, O. Kiselev, Hans Geissel, Z. Brencic, Israel Mardor, I. Mukha, H. Roesch, Ivan Miskun, S. Bagchi, A. Spataru, Research unit Nuclear & Hadron Physics, and Energy and Sustainability Research Institute Groni
- Subjects
nucl-th ,Nuclear Theory ,FOS: Physical sciences ,Interaction strength ,nucl-ex ,Mass spectrometry ,01 natural sciences ,7. Clean energy ,arseeni ,Ion ,Nuclear Theory (nucl-th) ,Nuclear physics ,Fragmentation (mass spectrometry) ,0103 physical sciences ,ddc:530 ,Neutron ,bromi ,Nuclear Experiment (nucl-ex) ,010306 general physics ,Nuclear Experiment ,Physics ,Isotope ,010308 nuclear & particles physics ,Mass measurement ,Atomic mass ,seleeni ,ydinfysiikka - Abstract
Mass measurements of the $^{69}$As, $^{70,71}$Se and $^{71}$Br isotopes, produced via fragmentation of a $^{124}$Xe primary beam at the FRS at GSI, have been performed with the multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) of the FRS Ion Catcher with an unprecedented mass resolving power of almost 1,000,000. For the $^{69}$As isotope, this is the first direct mass measurement. A mass uncertainty of 22 keV was achieved with only 10 events. For the $^{70}$Se isotope, a mass uncertainty of 2.6 keV was obtained, corresponding to a relative accuracy of $\delta$m/m = 4.0$\times 10^{-8}$, with less than 500 events. The masses of the $^{71}$Se and $^{71}$Br isotopes were measured with an uncertainty of 23 and 16 keV, respectively. Our results for the $^{70,71}$Se and $^{71}$Br isotopes agree with the 2016 Atomic Mass Evaluation, and our result for the $^{69}$As isotope resolves the discrepancy between previous indirect measurements. We measured also the mass of $^{14}$N$^{15}$N$^{40}$Ar (A=69) with a relative accuracy of $\delta$m/m = 1.7$\times 10^{-8}$, the highest yet achieved with a MR-TOF-MS. Our results show that the measured restrengthening of the proton-neutron interaction ($\delta$V$_{pn}$) for odd-odd nuclei at the N=Z line above Z=29 (recently extended to Z=37) is hardly evident at N-Z=2, and not evident at N-Z=4. Nevertheless, detailed structure of $\delta$V$_{pn}$ along the N-Z=2 and N-Z=4 lines, confirmed by our mass measurements, may provide a hint regarding the ongoing $\approx$500 keV discrepancy in the mass value of the $^{70}$Br isotope, which prevents including it in the world average of ${Ft}$-value for superallowed 0$^+\rightarrow$ 0$^+$ $\beta$ decays. The reported work sets the stage for mass measurements with the FRS Ion Catcher of nuclei at and beyond the N=Z line in the same region of the nuclear chart, including the $^{70}$Br isotope., Comment: 11 pages, 4 figures, accepted for publication at Physical Review C
- Published
- 2021
26. Mass and half-life measurements of neutron-deficient isotopes with A~100 and developments for the FRS Ion Catcher and CISE
- Author
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Ali Mollaebrahimi, Kalantar-Nayestanaki, Nasser, Dickel, T., and Energy and Sustainability Research Institute Gron.
- Subjects
Physics ,Isotope ,Radiochemistry ,technology, industry, and agriculture ,Half-life ,Neutron ,Ion - Abstract
The goal of this thesis was to develop new methods to study the nuclear structure for A~100 neutron-deficient isotopes by means of half-life and mass measurements. The thesis is divided into three main sub-projects. First, the initial developments of the CISE setup for chemical isobaric separation of ions. Second, the developments in the gas-handling system of the Cryogenic Stopping Cell (CSC) of the FRS-IC setup. Third, half-life and mass measurements of medium-heavy and heavy nuclei by using MR-TOF-MS technique at the FRS-IC setup.
- Published
- 2021
27. Mass measurements of As, Se, and Br nuclei, and their implication on the proton-neutron interaction strength toward the N=Z line
- Author
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Mardor, I., primary, Andrés, S. Ayet San, additional, Dickel, T., additional, Amanbayev, D., additional, Beck, S., additional, Bergmann, J., additional, Geissel, H., additional, Gröf, L., additional, Haettner, E., additional, Hornung, C., additional, Kalantar-Nayestanaki, N., additional, Kripko-Koncz, G., additional, Miskun, I., additional, Mollaebrahimi, A., additional, Plaß, W. R., additional, Scheidenberger, C., additional, Weick, H., additional, Bagchi, Soumya, additional, Balabanski, D. L., additional, Bezbakh, A. A., additional, Brencic, Z., additional, Charviakova, O., additional, Chudoba, V., additional, Constantin, Paul, additional, Dehghan, M., additional, Fomichev, A. S., additional, Grigorenko, L. V., additional, Hall, O., additional, Harakeh, M. N., additional, Hucka, J.-P., additional, Kankainen, A., additional, Kiselev, O., additional, Knöbel, R., additional, Kostyleva, D. A., additional, Krupko, S. A., additional, Kurkova, N., additional, Kuzminchuk, N., additional, Mukha, I., additional, Muzalevskii, I. A., additional, Nichita, D., additional, Nociforo, C., additional, Patyk, Z., additional, Pfützner, M., additional, Pietri, S., additional, Purushothaman, S., additional, Reiter, M. P., additional, Roesch, H., additional, Schirru, F., additional, Sharov, P. G., additional, Spătaru, A., additional, Stanic, G., additional, State, A., additional, Tanaka, Y. K., additional, Vencelj, M., additional, Yavor, M. I., additional, and Zhao, J., additional
- Published
- 2021
- Full Text
- View/download PDF
28. Determining spontaneous fission properties by direct mass measurements with the FRS Ion Catcher
- Author
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David Benyamin, Sönke Beck, Wolfgang R. Plaß, Paul Constantin, Lizzy Gröff, Julian Bergmann, Samuel Ayet San Andrés, Goran Stanic, Daler Amanbayev, Ali Mollaebrahimi, Ivan Miskun, Gabriella Kripko-Koncz, Christine Hornung, Christian Will, Christoph Scheidenberger, Israel Mardor, Timo Dickel, A. Rotaru, Hans Geissel, Alexandre Cléroux Cuillerier, and Stephan Pomp
- Subjects
Physics ,Fission ,QC1-999 ,Fission product yield ,Nuclear reactor ,law.invention ,Nuclear physics ,Subatomär fysik ,Neutron capture ,law ,Subatomic Physics ,r-process ,Neutron ,ddc:530 ,Nuclide ,Spontaneous fission - Abstract
The European physical journal / Web of Conferences 239, 02004 (2020). doi:10.1051/epjconf/202023902004, Published by EDP Sciences, Les Ulis
- Published
- 2020
29. Mass and half-life measurements of neutron-deficient iodine isotopes
- Author
-
Christoph Scheidenberger, A. Prochazka, S. Pietri, Israel Mardor, Nasser Kalantar-Nayestanaki, C. Rappold, S. Bagchi, Iain Moore, Hans Geissel, Ann Kathrin Rink, Moritz P. Reiter, Emma Haettner, S. Kaur, J. Ebert, Christine Hornung, Helmut Weick, Wayne Lippert, Ivan Miskun, Florian Greiner, Ali Mollaebrahimi, Timo Dickel, Andrew Finlay, J. S. Winfield, Ilkka Pohjalainen, Paul Constantin, S. Purushothaman, Bo Mei, Yoshiki Tanaka, Julian Bergmann, Samuel Ayet San Andrés, Wolfgang R. Plaß, Jan Hendrick Otto, and Research unit Nuclear & Hadron Physics
- Subjects
Nuclear and High Energy Physics ,ALPHA-DECAY ,SEPARATOR ,Mass spectrometry ,01 natural sciences ,Ion ,jodi ,0103 physical sciences ,Nuclear fusion ,Neutron ,ddc:530 ,010306 general physics ,Nuclear Experiment ,Physics ,isotoopit ,Isotope ,010308 nuclear & particles physics ,PERFORMANCE ,SPECTROMETRY ,Quadrupole ,FRS ,PROJECTILE ,Alpha decay ,Atomic physics ,ydinfysiikka ,Ground state ,SYSTEM - Abstract
The European physical journal / A 56(5), 143 (2020). doi:10.1140/epja/s10050-020-00153-5, Published by Springer, Heidelberg
- Published
- 2020
- Full Text
- View/download PDF
30. The Faces of Patriotism in the Poetry of the Palestinian Women
- Author
-
Ezzat MollaEbrahimi
- Subjects
contemporary poetry ,palestine ,patriotism ,women. ,Women. Feminism ,HQ1101-2030.7 - Abstract
If we study the contemporary Palestinian poetry of the last century we will find that the theme of nationhood and motherland dominates it. One reason is the fact that during this period Palestine has been through such events that has ignited a sense of patriotism, a wish to defend of the motherland and the Arabic origin of the Palestinian people. Since the Balfour Declaration, the endeavour to enforce it and the repression of the Paletinians during the uprisings of 1936-1948, and especially after the 1967 war, have contributed to the cause of Palestinian nationalism. It is natural therefore that contemporary Palestinian poetry should be in tune with popular aspirations in promoting the spirit of patriotism
- Published
- 2010
31. Nuclear Structure Studies with High-Precision Mass Measurements of Spontaneous Fission Fragments at the FRS Ion Catcher.
- Author
-
Spătaru, A., Amanbayev, D., Ayet, S., Balabanski, D. L., Beck, S., Bergmann, J., Constantin, P., Dickel, T., Geissel, H., Hornung, C., Kalantar-Nayestanaki, N., Kripko-Koncz, G., Mardor, I., Mollaebrahimi, A., Plaß, W. R., Scheidenberger, C., Wasserheß, M., and Zhao, J.
- Subjects
NUCLEAR shell theory ,MASS measurement ,DAUGHTER ions ,ATOMIC mass ,TIME-of-flight mass spectrometers ,NUCLEAR structure - Abstract
Nuclear mass is a key property of atomic nuclei. The accurate determination of nuclear masses provides information for the nuclear shell structure and nuclear deformations. The FRS Ion Catcher experimental setup at GSI, Darmstadt was used to perform mass measurements of
252 Cf fragments using a multiple-reflection time-of-flight mass spectrometer. The reported results are compared to previous measurements and their implication in the estimation of two-neutron separation energy is discussed. [ABSTRACT FROM AUTHOR]- Published
- 2021
32. Mass and half-life measurements of neutron-deficient iodine isotopes.
- Author
-
Ayet San Andrés, Samuel, Mollaebrahimi, Ali, Dickel, Timo, Bergmann, Julian, Ebert, Jens, Geissel, Hans, Greiner, Florian, Haettner, Emma, Hornung, Christine, Kalantar-Nayestanaki, Nasser, Miskun, Ivan, Plaß, Wolfgang R., Purushothaman, Sivaji, Rink, Ann-Kathrin, Scheidenberger, Christoph, Weick, Helmut, Bagchi, Soumya, Constantin, Paul, Finlay, Andrew, and Kaur, Satbir
- Subjects
- *
MASS measurement , *IODINE isotopes , *RELATIVISTIC energy , *TIME-of-flight measurements , *FORECASTING , *ISOTOPES - Abstract
Neutron-deficient iodine isotopes, 116 I and 114 I, were produced at relativistic energies by in-flight fragmentation at the Fragment Separator (FRS) at GSI. The FRS Ion Catcher was used to thermalize the ions and to perform highly accurate mass measurements with a Multiple-Reflection Time-of-Flight Mass-Spectrometer (MR-TOF-MS). The masses of both isotopes were measured directly for the first time. The half-life of the 114 I was measured by storing the ions in an RF quadrupole for different storage times and counting the remaining nuclei with the MR-TOF-MS. The measured half-life was used to assign the ground state to the measured 114 I ions. Predictions on the possible α -decay branch for 114 I are presented based on the reduced uncertainties obtained for the Q α -value. Systematic studies of the mass surface were performed with the newly obtained masses, showing better agreement with the expected trend in this mass region. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
33. Mass measurements of As, Se and Br nuclei and their implication on the proton-neutron interaction strength towards the N=Z line
- Author
-
Ali Mollaebrahimi and Energy and Sustainability Research Institute Gron.
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