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Acta Physica Sinica (Overseas Edition), 1994, Vol. 3(12): 909-916    DOI: 10.1088/1004-423X/3/12/005
PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES Prev   Next  

“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
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
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.
Received:  22 July 1993      Revised:  03 January 1994      Accepted manuscript online: 
PACS:  52.80.Hc (Glow; corona)  
  52.25.Os (Emission, absorption, and scattering of electromagnetic radiation ?)  
  42.55.Vc (X- and γ-ray lasers)  
  32.30.Rj (X-ray spectra)  

Cite this article: 

WANG LIU-SHUI (王柳水), LIN ZUN-QI (林尊琪), ZHANG HUI-HUANG (章辉煌), HE XING-FA (何兴法), WANG DONG-JUN (王东君), LIN KANG-CHUN (林康春), GUAN FU-YI (管富义), WANG XIAO-QIN (王笑琴), LIN MING-YI (林鸣逸), WEI XIAO-CHUN (韦小春), HOU QING (候氢), LI JIA-MING (李家明), SHENG JIA-TIAN (盛家田), ZHANG GUO-PING (张国平) “PPAS” X-RAY ABSORPTION SPECTROSCOPY IN LASER-PRODUCED ALUMINUM PLASMA 1994 Acta Physica Sinica (Overseas Edition) 3 909

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