Nuclear level densities and $\gamma$-ray strength functions of $^{87}\mathrm{Kr}$ -- First application of the Oslo Method in inverse kinematics
| Autor: | Ingeberg, V. W., Siem, S., Wiedeking, M., Sieja, K., Bleuel, D. L., Brits, C. P., Bucher, T. D., Dinoko, T. S., Easton, J. L., Görgen, A., Guttormsen, M., Jones, P., Kheswa, B. V., Khumalo, N. A., Larsen, A. C., Lawrie, E. A., Lawrie, J. J., Majola, S. N. T., Malatji, K. L., Makhathini, L., Maqabuka, B., Negi, D., Noncolela, S. P., Papka, P., Sahin, E., Schwengner, R., Tveten, G. M., Zeiser, F., Zikhali, B. R. |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | The European Physical Journal A 56, 68 (2020) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epja/s10050-020-00070-7 |
| Popis: | The $\gamma$-ray strength function ($\gamma$SF) and nuclear level density (NLD) have been extracted for the first time from inverse kinematic reactions with the Oslo Method. This novel technique allows measurements of these properties across a wide range of previously inaccessible nuclei. Proton-$\gamma$ coincidence events from the $\mathrm{d}(^{86}\mathrm{Kr}, \mathrm{p}\gamma)^{87}\mathrm{Kr}$ reaction were measured at iThemba LABS and the $\gamma$SF and NLD in $^{87}\mathrm{Kr}$ obtained. The low-energy region of the $\gamma$SF is compared to Shell Model calculations which suggest this region to be dominated by M1 strength. The $\gamma$SF and NLD are used as input parameters to Hauser-Feshbach calculations to constrain $(\mathrm{n},\gamma)$ cross sections of nuclei using the TALYS reaction code. These results are compared to $^{86}\mathrm{Kr}(n,\gamma)$ data from direct measurements. Comment: Submitted to EpJ A Letters |
| Databáze: | arXiv |
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