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Title: X-ray Emissivities from Well Characterized Underdense, Laser-Heated Gas Targets

Abstract

Maximizing the conversion efficiency (CE) of laser energy into multi-keV x-rays is a general concern to many areas of high-energy-density plasma physics. Bright x-ray sources are needed for backlighters in order to radiograph targets in inertial-confinement fusion (ICF) experiments. As the targets get larger, and as compression in the targets increases, the backlighter sources need to be brighter and the backlighter-photon energies must increase. To this end, for a given laser power, backlighters can become brighter by becoming more efficient at converting the drive beams to multi-keV x-rays. Volumetric heating of low-density gas targets has been shown to be a very efficient method of producing x-rays. Recently, laser heating of an underdense aerogel target has demonstrated efficient x-ray production. Ongoing experiments are optimizing these designs; this paper reports on detailed calculations of the x-ray yield from L-shell Kr in laser-heated targets.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15014282
Report Number(s):
UCRL-CONF-205079
TRN: US0802105
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: 31rst European Physical Society Conference on Plasma Physics, London, United Kingdom, Jun 28 - Jul 02, 2004
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 70 PLASMA PHYSICS AND FUSION; 42 ENGINEERING; COMPRESSION; EFFICIENCY; HEATING; INERTIAL CONFINEMENT; L SHELL; LASERS; PHYSICS; PLASMA; PRODUCTION; TARGETS; X-RAY SOURCES

Citation Formats

Fournier, K B, Back, C A, Constantin, C, Miller, M C, Suter, L J, and Chung, H. X-ray Emissivities from Well Characterized Underdense, Laser-Heated Gas Targets. United States: N. p., 2004. Web.
Fournier, K B, Back, C A, Constantin, C, Miller, M C, Suter, L J, & Chung, H. X-ray Emissivities from Well Characterized Underdense, Laser-Heated Gas Targets. United States.
Fournier, K B, Back, C A, Constantin, C, Miller, M C, Suter, L J, and Chung, H. 2004. "X-ray Emissivities from Well Characterized Underdense, Laser-Heated Gas Targets". United States. https://www.osti.gov/servlets/purl/15014282.
@article{osti_15014282,
title = {X-ray Emissivities from Well Characterized Underdense, Laser-Heated Gas Targets},
author = {Fournier, K B and Back, C A and Constantin, C and Miller, M C and Suter, L J and Chung, H},
abstractNote = {Maximizing the conversion efficiency (CE) of laser energy into multi-keV x-rays is a general concern to many areas of high-energy-density plasma physics. Bright x-ray sources are needed for backlighters in order to radiograph targets in inertial-confinement fusion (ICF) experiments. As the targets get larger, and as compression in the targets increases, the backlighter sources need to be brighter and the backlighter-photon energies must increase. To this end, for a given laser power, backlighters can become brighter by becoming more efficient at converting the drive beams to multi-keV x-rays. Volumetric heating of low-density gas targets has been shown to be a very efficient method of producing x-rays. Recently, laser heating of an underdense aerogel target has demonstrated efficient x-ray production. Ongoing experiments are optimizing these designs; this paper reports on detailed calculations of the x-ray yield from L-shell Kr in laser-heated targets.},
doi = {},
url = {https://www.osti.gov/biblio/15014282}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jun 18 00:00:00 EDT 2004},
month = {Fri Jun 18 00:00:00 EDT 2004}
}

Conference:
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