150 / 2023-04-14 20:53:21
Electronic excitation processes of the 229Th isomer in laser-generated plasmas
thorium-229,isomer,nuclear excitation,plasma
摘要录用
Hanxu Zhang / Graduate School of CAEP
Jintao Qi / Graduate School of CAEP
Xu Wang / Graduate School of CAEP
The 229Th nucleus has an extremely low-lying isomeric state of energy at approximately 8 eV [1,2]. This unusual isomer is a potential candidate for a “nuclear optical clock” [3]. One of the current research focuses is to find efficient methods to produce the isomer, i.e., exciting the 229Th nucleus from the ground state to the isomeric state [4,5].



We consider electronic excitation processes for the isomeric excitation. These processes include nuclear excitation by electron transition (NEET), nuclear excitation by electron capture (NEEC), and nuclear excitation by inelastic electron scattering (NEIES). A unified theoretical framework is developed to calculate these processes [6,7]. These processes may also co-exist, such as in a laser-generated plasma [8]. Which process prevails is determined by the plasma condition. Several examples will be given.



[1] L. Kroger and C. Reich, Nucl. Phys. A 259, 29 (1976).

[2] B. Seiferle et al., Nature 573, 243 (2019).

[3] A. Yamaguchi et al., Phys. Rev. Lett. 123, 222501 (2019).

[4] K. Beeks et al., Nat. Rev. Phys. 3, 238 (2021).

[5] W. Wang, J. Zhou, B. Liu, and X. Wang, Phys. Rev. Lett. 127, 052501 (2021).

[6] H. Zhang, W. Wang, and X. Wang, Phys. Rev. C. 106, 044604 (2022).

[7] H. Zhang and X. Wang, submitted.

[8] P. V. Borisyuk et al., arXiv: 1804.00299.
重要日期
  • 会议日期

    06月05日

    2023

    06月09日

    2023

  • 04月30日 2023

    提前注册日期

  • 05月01日 2023

    摘要截稿日期

  • 05月01日 2023

    摘要录用通知日期

  • 05月01日 2023

    初稿截稿日期

  • 05月31日 2023

    注册截止日期

主办单位
等离子体物理重点实验室
北京师范大学天文系
承办单位
Matter and Radiation at Extremes期刊
中国工程物理研究院流体物理研究所
北京应用物理与计算数学研究所
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