학술논문
Nuclear level densities and $\gamma$-ray strength functions of $^{87}\mathrm{Kr}$ -- First application of the Oslo Method in inverse kinematics
Document Type
Working Paper
Author
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.
Source
The European Physical Journal A 56, 68 (2020)
Subject
Language
Abstract
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
Comment: Submitted to EpJ A Letters