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Title: Bright x-ray stainless steel K-shell source development at the National Ignition Facility

Abstract

High x-ray conversion efficiency (XRCE) K-shell sources are being developed for high energy density experiments for use as backlighters and for the testing of materials exposed to high x-ray fluxes and fluences. Recently, sources with high XRCE in the K-shell x-ray energy range of iron and nickel were investigated at the National Ignition Facility (NIF). The x-ray conversion efficiency in the 5–9 keV spectral range was determined to be 6.8% ± 0.3%. These targets were 4.1 mm diameter, 4 mm tall hollow epoxy tubes having a 50 μm thick wall supporting a tube of 3 to 3.5 μm thick stainless steel. The NIF laser deposited ∼460 kJ of 3ω light into the target in a 140 TW, 3.3 ns square pulse. The absolute x-ray emission of the source was measured by two calibrated Dante x-ray spectrometers. Time resolved images filtered for the Fe K-shell were recorded to follow the heating of the target. Time integrated high-resolution spectra were recorded in the K-shell range.

Authors:
; ; ; ; ; ; ; ;  [1]; ;  [2]
  1. Lawrence Livermore National Laboratory, P.O. Box 808 L170, Livermore, California 94551 (United States)
  2. Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14623 (United States)
Publication Date:
OSTI Identifier:
22489996
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CONVERSION; ENERGY DENSITY; EPOXIDES; IRON; K SHELL; KEV RANGE; LASERS; MATERIALS TESTING; NICKEL; SPECTRA; STAINLESS STEELS; TIME RESOLUTION; US NATIONAL IGNITION FACILITY; VISIBLE RADIATION; X RADIATION; X-RAY SPECTROMETERS

Citation Formats

May, M. J., Fournier, K. B., Colvin, J. D., Barrios, M. A., Dewald, E. L., Moody, J., Patterson, J. R., Schneider, M., Widmann, K., Hohenberger, M., and Regan, S. P. Bright x-ray stainless steel K-shell source development at the National Ignition Facility. United States: N. p., 2015. Web. doi:10.1063/1.4922751.
May, M. J., Fournier, K. B., Colvin, J. D., Barrios, M. A., Dewald, E. L., Moody, J., Patterson, J. R., Schneider, M., Widmann, K., Hohenberger, M., & Regan, S. P. Bright x-ray stainless steel K-shell source development at the National Ignition Facility. United States. doi:10.1063/1.4922751.
May, M. J., Fournier, K. B., Colvin, J. D., Barrios, M. A., Dewald, E. L., Moody, J., Patterson, J. R., Schneider, M., Widmann, K., Hohenberger, M., and Regan, S. P. Mon . "Bright x-ray stainless steel K-shell source development at the National Ignition Facility". United States. doi:10.1063/1.4922751.
@article{osti_22489996,
title = {Bright x-ray stainless steel K-shell source development at the National Ignition Facility},
author = {May, M. J. and Fournier, K. B. and Colvin, J. D. and Barrios, M. A. and Dewald, E. L. and Moody, J. and Patterson, J. R. and Schneider, M. and Widmann, K. and Hohenberger, M. and Regan, S. P.},
abstractNote = {High x-ray conversion efficiency (XRCE) K-shell sources are being developed for high energy density experiments for use as backlighters and for the testing of materials exposed to high x-ray fluxes and fluences. Recently, sources with high XRCE in the K-shell x-ray energy range of iron and nickel were investigated at the National Ignition Facility (NIF). The x-ray conversion efficiency in the 5–9 keV spectral range was determined to be 6.8% ± 0.3%. These targets were 4.1 mm diameter, 4 mm tall hollow epoxy tubes having a 50 μm thick wall supporting a tube of 3 to 3.5 μm thick stainless steel. The NIF laser deposited ∼460 kJ of 3ω light into the target in a 140 TW, 3.3 ns square pulse. The absolute x-ray emission of the source was measured by two calibrated Dante x-ray spectrometers. Time resolved images filtered for the Fe K-shell were recorded to follow the heating of the target. Time integrated high-resolution spectra were recorded in the K-shell range.},
doi = {10.1063/1.4922751},
journal = {Physics of Plasmas},
number = 6,
volume = 22,
place = {United States},
year = {Mon Jun 15 00:00:00 EDT 2015},
month = {Mon Jun 15 00:00:00 EDT 2015}
}