Development and Application of Low Energy X-Ray and Electron Physics.

摘要

A new spectrograph system has been developed and calibrated in this AFOSR-supported laboratory for the absolute spectrometry of high intensity pulsed x-ray sources (fusion energy and x-ray laser development) in the 100-10,000 eV region. This spectral region is analyzed with fixed elliptically curved crystals and molecular or metal multilayers of 2d-values in the 3-160 A range. Twin channels are utilized for simultaneous time-integrated photographic recording and for time-resolved x-ray streak camera recording. Absolute calibrations of the elliptical analyzers, of the photographic film, and of the gold and CsI transmission photocathodes have been made using monoenergetic, CW laboratory x-ray sources. The overall transmission characteristics of the spectrograph have also been determined. The instrument has been designed for mounting through a pneumatically-controlled high-vacuum valve onto a four-inch port of a one-meter diameter source chamber and includes an appendage, high-vacuum, sputter/ion pre-pumping station. The initial testing and application of this new spectrographic system has been on the University of Rochester's LLE 24-laser-beam OMEGA facility. (Author)