High-precision mass measurements of the ground and isomeric states in $^{124,125}$Ag
| Autor: | Ruotsalainen, J., Nesterenko, D. A., Stryjczyk, M., Kankainen, A., Ayoubi, L. Al, Beliuskina, O., Canete, L., Chauveau, P., de Groote, R. P., Delahaye, P., Eronen, T., Flayol, M., Ge, Z., Geldhof, S., Gins, W., Hukkanen, M., Jaries, A., Kahl, D., Kumar, D., Moore, I. D., Nikas, S., Penttilä, H., Pitman-Weymouth, D., Raggio, A., Rinta-Antila, S., de Roubin, A., Vilen, M., Virtanen, V., Winter, M. |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The masses of the ground and isomeric states in $^{124,125}$Ag have been measured using the phase-imaging ion-cyclotron-resonance technique at the JYFLTRAP double Penning trap mass spectrometer. The ground states of $^{124}$Ag and $^{125}$Ag were found to be 30(250) keV and 250(430) keV less bound but 36 and 110 times more precise than in the Atomic Mass Evaluation 2020, respectively. The excitation energy of $^{124}$Ag$^{m}$, ${E_x = 188.2(25)}$ keV, was determined for the first time. The new precise mass values have been utilised to study the evolution of nuclear structure via two-neutron separation energies. The impact on the astrophysical rapid neutron capture process has been investigated via neutron-capture reaction rate calculations. The precision measurements indicate a more linear trend in two-neutron separation energies and reduce the mass-related uncertainties for the neutron-capture rate of $^{124}$Ag$(n,\gamma)^{125}$Ag by a factor of around 100. The new mass values also improve the mass of $^{123}$Pd, previously measured using $^{124}$Ag as a reference. Comment: 9 pages, 4 figures |
| Databáze: | arXiv |
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