Independent isotopic fission yields of Cf-252 spontaneous fission via mass measurements at the FRS Ion Catcher
| العنوان: | Independent isotopic fission yields of Cf-252 spontaneous fission via mass measurements at the FRS Ion Catcher |
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| المؤلفون: | Waschitz, Y., Amanbayev, D., Spataru, A., Mardor, I., Dickel, T., Cohen, E. O., Aviv, O., Andres, S. Ayet San, Balabanski, D. L., Beck, S., Bergmann, J., Brencic, Z., Constantin, P., Dehghan, M., Geissel, H., Groef, L., Hornung, C., Kalantar-Nayestanaki, N., Kripko-Koncz, G., Miskun, I., Mollaebrahimi, A., Nichita, D., Plass, W. R., Pomp, Stephan, 1968, Scheidenberger, C., Solders, Andreas, PhD, 1976, Stanic, G., Wasserhess, M., Vencelj, M., Zhao, J. |
| المصدر: | 15th International Conference on Nuclear Data for Science and Technology, ND2022 EPJ Web of Conferences. |
| الوصف: | 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 Cf-252 source installed in a cryogenic stopping cell, and were identified and counted with the multiple-reflection time-of-flight mass spectrometer (MR-TOR-MS) of the FRS-IC, utilizing well-established measurement and data analysis methods. The MR-TOR-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.O. 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. |
| وصف الملف: | electronic |
| الوصول الحر: | https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-511615Test https://doi.org/10.1051/epjconf/202328404005Test https://uu.diva-portal.org/smash/get/diva2:1797436/FULLTEXT01.pdfTest |
| قاعدة البيانات: | SwePub |
| DOI: | 10.1051/epjconf/202328404005 |
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