J. Phys. IV France 11 (2001) Pr2-519-Pr2-522
Development of soft X-ray transmission grating spectrograph and its spectrum unfolding techniques for ultrashort pulse laser produced plasma diagnosisJ. 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