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arXiv · 1112.3192

High-Spin States and Level Structure in Stable Nucleus 84Sr

Shuifa Shen·Xuzhong Kang·Guangbing Han·Shuxian Wen·Yupeng Yan·Shiwei Yan·Xiaoguang Wu·Lihua Zhu·Guangsheng Li·Chuangye He
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Abstract

High-spin states of 84Sr were populated through the reaction 70Zn(18O, 4n)84Sr at 75 MeV beam energy. Measurement of excitation function, gamma-gamma coincidences, directional correlation of oriented states (DCO) ratios and gamma-transition intensities were performed using eight anticompton HPGe detectors and one planar HPGe detector. Based on the measured results, a new level scheme of 84Sr was established in which 12 new states and nearly 30 new gamma-transitions were identified in the present work. The positive-parity states of the new level scheme were compared with results from calculations in the framework of the projected shell model (PSM). One negative-parity band was extended to spin I=19 and it can be found that in the high-spin states the gamma-transition energies show the nature of signature staggering. The negative-parity band levels are in good agreement with the deformed configuration-mixing shell model (DCM) calculations.

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Shuifa Shen, Xuzhong Kang, Guangbing Han, Shuxian Wen, Yupeng Yan, Shiwei Yan, Xiaoguang Wu, Lihua Zhu, Guangsheng Li, Chuangye He. 2012-06-06. High-Spin States and Level Structure in Stable Nucleus 84Sr. https://arxiv.org/abs/1112.3192

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