J. Phys. IV France
Volume 11, Numéro PR2, Juillet 2001
X-Ray Lasers 2000
Page(s) Pr2-519 - Pr2-522
7th International Conference on X-Ray Lasers

J. Phys. IV France 11 (2001) Pr2-519-Pr2-522

DOI: 10.1051/jp4:20012101

Development of soft X-ray transmission grating spectrograph and its spectrum unfolding techniques for ultrashort pulse laser produced plasma diagnosis

J. Deng, Z.Q. Zhang and Z.Z. Xu

Laboratory for High Intensity Optics, Shanghai Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, P.O. Box 800-211, Shanghai 201800, China

A normal incident, transmission grating spectrograph with enhanced collection effîciency and high spectral resolution has been developed for ultrashort pulsed laser produced plasma diagnosis with a high spectral resolution of [MATH]. The partial coherent diffraction theory is applied to determine the imaging characteristics of the spectrograph. Intensity distributions on the observation plane are given in closed form. A novel method of spectrum unfolding techniques is put forward. Computer simulation shows that this method can give an uncertainty of [MATH] when applied in the radiation temperature measurement in indirect driven ICF experiments.

© EDP Sciences 2001