Matter and Radiation at Extremes (Jul 2024)

Measurement of 2p-3d absorption in a hot molybdenum plasma

  • Gang Xiong,
  • Bo Qing,
  • Zhiyu Zhang,
  • Longfei Jing,
  • Yang Zhao,
  • Minxi Wei,
  • Yimeng Yang,
  • Lifei Hou,
  • Chengwu Huang,
  • Tuo Zhu,
  • Tianming Song,
  • Min Lv,
  • Yan Zhao,
  • Yuxue Zhang,
  • Guohong Yang,
  • Zeqing Wu,
  • Jun Yan,
  • Yaming Zou,
  • Jiyan Zhang,
  • Jiamin Yang

DOI
https://doi.org/10.1063/5.0172662
Journal volume & issue
Vol. 9, no. 4
pp. 047801 – 047801-12

Abstract

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We present measurements of the 2p-3d transition opacity of a hot molybdenum–scandium sample with nearly half-vacant molybdenum M-shell configurations. A plastic-tamped molybdenum–scandium foil sample is radiatively heated to high temperature in a compact D-shaped gold Hohlraum driven by ∼30 kJ laser energy at the SG-100 kJ laser facility. X rays transmitted through the molybdenum and scandium plasmas are diffracted by crystals and finally recorded by image plates. The electron temperatures in the sample in particular spatial and temporal zones are determined by the K-shell absorption of the scandium plasma. A combination of the IRAD3D view factor code and the MULTI hydrodynamic code is used to simulate the spatial distribution and temporal behavior of the sample temperature and density. The inferred temperature in the molybdenum plasma reaches a average of 138 ± 11 eV. A detailed configuration-accounting calculation of the n = 2–3 transition absorption of the molybdenum plasma is compared with experimental measurements and quite good agreement is found. The present measurements provide an opportunity to test opacity models for complicated M-shell configurations.