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Title: Direct-drive high-convergence-ratio implosion studies on the OMEGA laser system

Abstract

A series of direct-drive implosion experiments, using room-temperature, gas-filled CH targets, are performed on the University of Rochester's OMEGA laser system [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. The target performance at stagnation and its dependence on beam smoothing and pulse shaping is investigated. Compressed core conditions are diagnosed using x-ray and neutron spectroscopy, and x-ray imaging. The individual beams of OMEGA are smoothed by spectral dispersion in two dimensions (2D SSD) with laser bandwidths up to {approx}0.3 THz, with 1 ns square to 2.5 ns shaped pulses. A clear dependence of target performance on pulse shape and beam smoothing is seen, with the target performance (yield, areal density, and shell integrity) improving as SSD bandwidth is applied. (c)

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]
  1. Laboratory For Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States)
  2. Laboratory For Laser Energetics, University of Rochester, 250 East River Road, Rochester, New York 14623-1299 (United States) (and others)
Publication Date:
OSTI Identifier:
20216076
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 7; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; IMPLOSIONS; DIRECT DRIVE LASER IMPLOSION; OMEGA FACILITY; PLASMA DIAGNOSTICS; NEUTRON SPECTROSCOPY; X-RAY SPECTROSCOPY; LASER FUSION REACTORS; EXPERIMENTAL DATA

Citation Formats

Marshall, F. J., Delettrez, J. A., Epstein, R., Glebov, V. Yu., Harding, D. R., McKenty, P. W., Meyerhofer, D. D., Radha, P. B., Seka, W., and Skupsky, S. Direct-drive high-convergence-ratio implosion studies on the OMEGA laser system. United States: N. p., 2000. Web. doi:10.1063/1.874032.
Marshall, F. J., Delettrez, J. A., Epstein, R., Glebov, V. Yu., Harding, D. R., McKenty, P. W., Meyerhofer, D. D., Radha, P. B., Seka, W., & Skupsky, S. Direct-drive high-convergence-ratio implosion studies on the OMEGA laser system. United States. doi:10.1063/1.874032.
Marshall, F. J., Delettrez, J. A., Epstein, R., Glebov, V. Yu., Harding, D. R., McKenty, P. W., Meyerhofer, D. D., Radha, P. B., Seka, W., and Skupsky, S. Mon . "Direct-drive high-convergence-ratio implosion studies on the OMEGA laser system". United States. doi:10.1063/1.874032.
@article{osti_20216076,
title = {Direct-drive high-convergence-ratio implosion studies on the OMEGA laser system},
author = {Marshall, F. J. and Delettrez, J. A. and Epstein, R. and Glebov, V. Yu. and Harding, D. R. and McKenty, P. W. and Meyerhofer, D. D. and Radha, P. B. and Seka, W. and Skupsky, S.},
abstractNote = {A series of direct-drive implosion experiments, using room-temperature, gas-filled CH targets, are performed on the University of Rochester's OMEGA laser system [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)]. The target performance at stagnation and its dependence on beam smoothing and pulse shaping is investigated. Compressed core conditions are diagnosed using x-ray and neutron spectroscopy, and x-ray imaging. The individual beams of OMEGA are smoothed by spectral dispersion in two dimensions (2D SSD) with laser bandwidths up to {approx}0.3 THz, with 1 ns square to 2.5 ns shaped pulses. A clear dependence of target performance on pulse shape and beam smoothing is seen, with the target performance (yield, areal density, and shell integrity) improving as SSD bandwidth is applied. (c)},
doi = {10.1063/1.874032},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}