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Linear laser plasma toward large-sized uniform soft X-ray source

Published online by Cambridge University Press:  09 March 2009

Xiaofang Wang ,
Zhizhan Xu ,
Shisheng Chen ,
Aidi Qian ,
Yueling Li ,
Pinzhong Fan  and
Lihuang Lin
Xiaofang Wang
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
Zhizhan Xu
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
Shisheng Chen
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
Aidi Qian
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
Yueling Li
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
Pinzhong Fan
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
Lihuang Lin
Affiliation:
Shanghai Institute of Optics and Fine Mechanics, Academia Sinica, P.O. Box 800–211, Shanghai 201800, Peoples Republic of China
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Abstract

The effect of laser intensity distribution along the line focus on the uniformity of the line-shaped plasmas produced is investigated with time-integrated and time-resolved soft X-ray and optical diagnostics. Evident plasma condition nonuniformities along the line focus resulting from nonuniform laser intensity distributions have been observed with a conventional simple line-focusing technique. With a new line-focusing technique producing a uniform laser illumination, a uniform, line-shaped plasma can be obtained. It is also found that nonuniformities under uniform laser illumination occur mostly during laser heating. The line-shaped uniform laser plasma can be used as a large, uniform X-ray source besides its importance in X-ray laser demonstration and amplification. As an application of such line-shaped plasmas as X-ray sources, the no-overcoat 5F X-ray film is calibrated for the first time by a new method in the soft X-ray range from 10–80 A.

Type
Research Article
Information
Laser and Particle Beams , Volume 10 , Issue 4 , December 1992 , pp. 777 - 786
Copyright
Copyright © Cambridge University Press 1992

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