中国物理B ›› 1994, Vol. 3 ›› Issue (12): 909-916.doi: 10.1088/1004-423X/3/12/005

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“PPAS” X-RAY ABSORPTION SPECTROSCOPY IN LASER-PRODUCED ALUMINUM PLASMA

王柳水1, 林尊琪1, 章辉煌1, 何兴法1, 王东君1, 林康春1, 管富义1, 王笑琴1, 林鸣逸1, 韦小春1, 盛家田2, 张国平2, 候氢3, 李家明3   

  1. (1)High Power Laser and Physics Joint Laboratory, Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, Shanghai 201800, China; (2)Institute of Applied Physics and Computational Mathematics, Beijing 100088, China; (3)Institute of Physics, Academia Sinica, Beijing 100080, China
  • 收稿日期:1993-07-22 修回日期:1994-01-03 出版日期:1994-12-20 发布日期:1994-12-20

“PPAS” X-RAY ABSORPTION SPECTROSCOPY IN LASER-PRODUCED ALUMINUM PLASMA

WANG LIU-SHUI (王柳水)a, LIN ZUN-QI (林尊琪)a, ZHANG HUI-HUANG (章辉煌)a, HE XING-FA (何兴法)a, WANG DONG-JUN (王东君)a, LIN KANG-CHUN (林康春)a, GUAN FU-YI (管富义)a, WANG XIAO-QIN (王笑琴)a, LIN MING-YI (林鸣逸)a, WEI XIAO-CHUN (韦小春)a, HOU QING (候氢)b, LI JIA-MING (李家明)b, SHENG JIA-TIAN (盛家田)c, ZHANG GUO-PING (张国平)c   

  1. a High Power Laser and Physics Joint Laboratory, Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, Shanghai 201800, China; b Institute of Physics, Academia Sinica, Beijing 100080, China; c Institute of Applied Physics and Computational Mathematics, Beijing 100088, China
  • Received:1993-07-22 Revised:1994-01-03 Online:1994-12-20 Published:1994-12-20

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摘要： We have developed and successfully demonstrated the "point projection absorption spectroscopy (hereafter abbreviated to PPAS)" technique to record keV X-ray absorption spectra in the coronal region of laser produced aluminum plasma which provides spatial information in the corona. Absorption spectrum of the Al Ⅻ 1s2-1s2p resonant line for time delays up to 250, 500 and 750 ps after the peak of the incident laser pulse have been observed. Analysis of an absorption spectrum should allow a high spatial resolution (< 25μm) history of the absorbing ion population density to be determined. The 1-D hydro-code JB19 has been used to simulate the experiment and the predictions are compared to the observations. Such comparison can be useful in validating parts of the codes used for gain prediction on recombination X-ray laser transitions.

Abstract: We have developed and successfully demonstrated the "point projection absorption spectroscopy (hereafter abbreviated to PPAS)" technique to record keV X-ray absorption spectra in the coronal region of laser produced aluminum plasma which provides spatial information in the corona. Absorption spectrum of the Al Ⅻ 1s2-1s2p resonant line for time delays up to 250, 500 and 750 ps after the peak of the incident laser pulse have been observed. Analysis of an absorption spectrum should allow a high spatial resolution (< 25μm) history of the absorbing ion population density to be determined. The 1-D hydro-code JB19 has been used to simulate the experiment and the predictions are compared to the observations. Such comparison can be useful in validating parts of the codes used for gain prediction on recombination X-ray laser transitions.

中图分类号:  (Glow; corona)

  • 52.80.Hc
52.25.Os (Emission, absorption, and scattering of electromagnetic radiation ?) 42.55.Vc (X- and γ-ray lasers) 32.30.Rj (X-ray spectra)