通过同质异能衰变揭示的187Ta的性质
核实验
2020-11-10 v1
摘要
通过多核子转移反应，利用氩气阻止池和激光电离，首次产生了处于高自旋同核异能态的质量分离187Ta。内转换γ射线揭示了一个位于1778 keV、寿命7.3 s的同核异能态，它通过一个转动带衰变，该转动带带有与趋近长球-扁球形变转变相关的扰动。模型计算显示，与同一质量区中较重元素相比，三轴性影响较小。该同核异能态衰变约化E2受阻因子为27，支持轴向对称性近似守恒的解释。
引用
@article{arxiv.2011.04284,
title = {Properties of 187Ta revealed through isomeric decay},
author = {P. M. Walker and Y. Hirayama and G. J. Lane and H. Watanabe and G. D. Dracoulis and M. Ahmed and M. Brunet and T. Hashimoto and S. Ishizawa and F. G. Kondev and Yu. A. Litvinov and H. Miyatake and J. Y. Moon and M. Mukai and T. Niwase and J. H. Park and Zs. Podolyak and M. Rosenbusch and P. Schury and M. Wada and X. Y. Watanabe and W. Y. Liang and F. R. Xu},
journal= {arXiv preprint arXiv:2011.04284},
year = {2020}
}
备注
5 pages, 5 figures