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}
}