A high-lying isomer in ^{92}Zr with lifetime modulated by the atomic charge states: a proposed approach for a nuclear gamma-ray laser

The nuclides ^{92}Zr are produced and transported by using a radioactive beam line to a lowbackground detection station. After a flight time of about 1.14 μs, the ions are implanted into a carbon foil, and four γ rays deexciting the 8+ state in ^{92}Zr are observed in coincidence with the implantation signals within a few nanoseconds. We conjecture that there exists an isomer located slightly above the 8^{+} state in ^{92}Zr. The isomeric lifetime in highly charged states is extended significantly due to the blocking of internal conversion decay channels, enabling its survival over the transportation. During the slowing-down process in the carbon foil, the ^{92}Zr ions capture electron and evolve toward neutral atoms, and consequently the lifetime is restored to a normal short value. Such a high-lying isomer depopulated by a low-energy transition may provide unique opportunity to develop nuclear γ laser.

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ArXiv.org
Published
2025-09-04
Primary Topic
Nuclear Physics and Applications
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article
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A high-lying isomer in ^{92}Zr with lifetime modulated by the atomic charge states: a proposed approach for a nuclear gamma-ray laser

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ArXiv.org
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article

A high-lying isomer in ^{92}Zr with lifetime modulated by the atomic charge states: a proposed approach for a nuclear gamma-ray laser

Aman Rohilla, Cenxi Yuan, Hooi Jin Ong, F. F. Zeng, Xiaohao Zhou, E.A Lawrie, Shuiqing Li, Song Guo, Lingdi Liu, Qiuhai Zeng, Chuan-Lei Jia, Meng Wang, G. Yang, Rui Wei, Yong Yang, W. Liang, Y. Zheng, N. Y. Huang, Zhengmao Jia, W.Q Zhang, Hongfu Huang, G.S Li, Baoqing Ding, C. M. Petrache, Mingyi Liu, Hua-Xing Chen, K Wang, Fangfang Duan, Fang Fang, Meilin Liu, Yun Li, Zhiqiang Liu, Yanan Wu, Yulong Zhang, Yuxian Liang, Zhaohui Bai, Jianliang Chen, Yang Yu, B. F. Lv, Jinglong Ma, S. Jin, J.H. Li, Y. Fang, Z. G. Gan, S. W. Xu, Yinghuai Qiang, J. H. Xu
article en

Abstract

The nuclides ^{92}Zr are produced and transported by using a radioactive beam line to a lowbackground detection station. After a flight time of about 1.14 μs, the ions are implanted into a carbon foil, and four γ rays deexciting the 8+ state in ^{92}Zr are observed in coincidence with the implantation signals within a few nanoseconds. We conjecture that there exists an isomer located slightly above the 8^{+} state in ^{92}Zr. The isomeric lifetime in highly charged states is extended significantly due to the blocking of internal conversion decay channels, enabling its survival over the transportation. During the slowing-down process in the carbon foil, the ^{92}Zr ions capture electron and evolve toward neutral atoms, and consequently the lifetime is restored to a normal short value. Such a high-lying isomer depopulated by a low-energy transition may provide unique opportunity to develop nuclear γ laser.

ArXiv.org
Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (FR)
Openalex Percentile: Top 64%
Nuclear Physics and Applications
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