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Scaling studies with the dual crystal spectrometer at the OMEGA-EP laser facility

Published

Author(s)

Lawrence T. Hudson, C.I Szabo, J. Workman, K. Flippo, Uri Feldman, Albert Henins

Abstract

The dual crystal spectrometer (DCS) is an approved diagnostic at the OMEGA and the OMEGA-EP laser facilities for the measurement of high energy x-rays in the 11 90 keV energy range, e.g., for verification of the x-ray spectrum of backlighter targets of point projection radiography experiments.DCS has two cylindrically bent transmission crystal channels with image plate detectors at distances behind the crystals close to the size of the respective Rowland circle diameters taking advantage of the focusing effect of the cylindrically bent geometry. DCS, with a source to crystal distance of 1.2 m, provides the required energy dispersion for simultaneous detection of x-rays in a low energy channel (11 45 keV) and a high-energy channel (19 90 keV). A scaling study is described for varied pulse length with unchanged laser conditions (energy, focusing). The study shows that the K alpha line intensity is not strongly dependent on the length of the laser pulse
Citation
Review of Scientific Instruments
Volume
18

Keywords

crystal spectrometer, OMEGA-EP

Citation

Hudson, L. , Szabo, C. , Workman, J. , Flippo, K. , Feldman, U. and Henins, A. (2010), Scaling studies with the dual crystal spectrometer at the OMEGA-EP laser facility, Review of Scientific Instruments (Accessed February 23, 2024)
Created October 26, 2010, Updated February 19, 2017