تقرير
Compressional-mode resonances in the molybdenum isotopes: Emergence of softness in open-shell nuclei near A=90
| العنوان: | Compressional-mode resonances in the molybdenum isotopes: Emergence of softness in open-shell nuclei near A=90 |
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| المؤلفون: | Howard, K. B., Garg, U., Itoh, M., Akimune, H., Fujiwara, M., Furuno, T., Gupta, Y. K., Harakeh, M. N., Inaba, K., Ishibashi, Y., Karasudani, K., Kawabata, T., Kohda, A., Matsuda, Y., Murata, M., Nakamura, S., Okamoto, J., Ota, S., Piekarewicz, J., Sakaue, A., Senyigit, M., Tsumura, M., Yang, Y. |
| المصدر: | Phys. Lett. B 807 (2020) 135608 |
| سنة النشر: | 2020 |
| المجموعة: | Nuclear Experiment Nuclear Theory |
| مصطلحات موضوعية: | Nuclear Experiment, Nuclear Theory |
| الوصف: | "Why are the tin isotopes soft?" has remained, for the past decade, an open problem in nuclear structure physics: models which reproduce the isoscalar giant monopole resonance (ISGMR) in the "doubly-closed shell" nuclei, $^{90}$Zr and $^{208}$Pb, overestimate the ISGMR energies of the open-shell tin and cadmium nuclei, by as much as 1 MeV. In an effort to shed some light onto this problem, we present results of detailed studies of the ISGMR in the molybdenum nuclei, with the goal of elucidating where--and how--the softness manifests itself between $^{90}$Zr and the cadmium and tin isotopes. The experiment was conducted using the $^{94,96,98,100}$Mo($\alpha,\alpha^\prime$) reaction at $E_\alpha = 386$ MeV. A comparison of the results with relativistic, self-consistent Random-Phase Approximation calculations indicates that the ISGMR response begins to show softness in the molybdenum isotopes beginning with $A=92$. Comment: Accepted for publication to Physics Letters B |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2020.135608 |
| URL الوصول: | http://arxiv.org/abs/2005.10172 |
| رقم الأكسشن: | edsarx.2005.10172 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2020.135608 |
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