تقرير
Shape coexistence revealed in the $N=Z$ isotope $^{72}$Kr through inelastic scattering
| العنوان: | Shape coexistence revealed in the $N=Z$ isotope $^{72}$Kr through inelastic scattering |
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| المؤلفون: | Wimmer, K., Arici, T., Korten, W., Doornenbal, P., Delaroche, J. -P., Girod, M., Libert, J., Rodríguez, T. R., Aguilera, P., Algora, A., Ando, T., Baba, H., Blank, B., Boso, A., Chen, S., Corsi, A., Davies, P., de Angelis, G., de France, G., Doherty, D. T., Gerl, J., Gernhäuser, R., Goigoux, T., Jenkins, D., Kiss, G., Koyama, S., Motobayashi, T., Nagamine, S., Niikura, M., Nishimura, S., Obertelli, A., Lubos, D., Phong, V. H., Rubio, B., Sahin, E., Saito, T. Y., Sakurai, H., Sinclair, L., Steppenbeck, D., Taniuchi, R., Vaquero, V., Wadsworth, R., Wu, J., Zielinska, M. |
| سنة النشر: | 2020 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | The $N=Z=36$ nucleus $^{72}$Kr has been studied by inelastic scattering at intermediate energies. Two targets, $^{9}$Be and $^{197}$Au, were used to extract the nuclear deformation length, $\delta_\text{N}$, and the reduced $E2$ transition probability, $B(E2)$. The previously unknown non-yrast $2^+$ and $4^+$ states as well as a new candidate for the octupole $3^-$ state have been observed in the scattering on the Be target and placed in the level scheme based on $\gamma-\gamma$ coincidences. The second $2^+$ state was also observed in the scattering on the Au target and the $B(E2;\;2^+_2 \rightarrow 0^+_1)$ value could be determined for the first time. Analyzing the results in terms of a two-band mixing model shows clear evidence for a oblate-prolate shape coexistence and can be explained by a shape change from an oblate ground state to prolate deformed yrast band from the first $2^+$ state. This interpretation is corroborated by beyond mean field calculations using the Gogny D1S interaction. Comment: 12 pages, 11 figures, accepted European Physical Journal A |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epja/s10050-020-00171-3 |
| URL الوصول: | http://arxiv.org/abs/2005.10594 |
| رقم الأكسشن: | edsarx.2005.10594 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epja/s10050-020-00171-3 |
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