Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL
| Autor: | Jaries, A., Stryjczyk, M., Kankainen, A., Ayoubi, L. Al, Beliuskina, O., Canete, L., de Groote, R. P., Delafosse, C., Delahaye, P., Eronen, T., Flayol, M., Ge, Z., Geldhof, S., Gins, W., Hukkanen, M., Imgram, P., Kahl, D., Kostensalo, J., Kujanpää, S., Kumar, D., Moore, I. D., Mougeot, M., Nesterenko, D. A., Nikas, S., Patel, D., Penttilä, H., Pitman-Weymouth, D., Pohjalainen, I., Raggio, A., Ramalho, M., Reponen, M., Rinta-Antila, S., de Roubin, A., Ruotsalainen, J., Srivastava, P. C., Suhonen, J., Vilen, M., Virtanen, V., Zadvornaya, A. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The masses of $^{84}$Br, $^{105}$Mo, $^{115,119,121}$Pd, $^{122}$Ag, $^{127,129}$In, $^{132}$Sb and their respective isomeric states have been measured with the JYFLTRAP Penning trap mass spectrometer using the phase-imaging ion-cyclotron-resonance technique. The excitation energies of the isomeric states in $^{132}$Sb and $^{119}$Pd were experimentally determined for the first time, while for $^{84}$Br, $^{115}$Pd and $^{127,129}$In, the precision of the mass values was substantially improved. In $^{105}$Mo and $^{121}$Pd there were no signs of a long-lived isomeric state. The ground-state measurements of $^{119}$Pd and $^{122}$Ag indicated that both are significantly more bound than the literature values. For $^{122}$Ag, there was no indication of a proposed third long-lived state. The results for the $N=49$ nucleus $^{84}$Br and isomers close to doubly magic $^{132}$Sn have been compared to the shell-model and the microscopic quasiparticle-phonon model calculations. Comment: 14 pages, 10 figures |
| Databáze: | arXiv |
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