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Title: Ablation front Rayleigh-Taylor growth experiments in spherically convergent geometry

Abstract

Experiments were performed on the Nova laser [E. M. Campbell et al., Rev. Sci. Instrum. 57, 2101 (1986)], using indirectly driven capsules mounted in cylindrical gold hohlraums, to measure the Rayleigh-Taylor growth at the ablation front by time-resolved radiography. Modulations were preformed on the surface of Ge-doped plastic capsules. With initial modulation amplitude of 2-2.5 {mu}m, growth factors of about six in optical depth were seen, in agreement with simulations using the radiation hydrocode FCI2 [G. Schurtz, La fusion thermonucleaire inertielle par laser, edited by R. Dautray et al. (Eyrolles, Paris, 1994), Vol. 2]. With initial modulation amplitude of 0.5 {mu}m and a longer drive, growth factors of about 100-150 in optical depth were seen. Comparable planar experiments showed growth factors of about 40 in optical depth. Analytical models predict the observed growth factors. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3]
  1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551 (United States)
  2. Commissariat a l'Energie Atomique-Direction des Applications Militaire Ile de France, BP 12, 91680 Bruyeres le Chatel, (France)
  3. Commissariat a l'Energie Atomique-Direction des Applications Militaire Ile de France, BP 12, 91680 Bruyeres le Chatel, (France) (and others)
Publication Date:
OSTI Identifier:
20216067
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; ABLATION; LASER TARGETS; NOVA FACILITY; RAYLEIGH-TAYLOR INSTABILITY; GOLD; GROWTH; PLASMA SIMULATION; LASER-PRODUCED PLASMA; EXPERIMENTAL DATA

Citation Formats

Glendinning, S. G., Colvin, J., Haan, S., Kalantar, D. H., Landen, O. L., Marinak, M. M., Remington, B. A., Wallace, R., Cherfils, C., and Dague, N. Ablation front Rayleigh-Taylor growth experiments in spherically convergent geometry. United States: N. p., 2000. Web. doi:10.1063/1.874024.
Glendinning, S. G., Colvin, J., Haan, S., Kalantar, D. H., Landen, O. L., Marinak, M. M., Remington, B. A., Wallace, R., Cherfils, C., & Dague, N. Ablation front Rayleigh-Taylor growth experiments in spherically convergent geometry. United States. doi:10.1063/1.874024.
Glendinning, S. G., Colvin, J., Haan, S., Kalantar, D. H., Landen, O. L., Marinak, M. M., Remington, B. A., Wallace, R., Cherfils, C., and Dague, N. Mon . "Ablation front Rayleigh-Taylor growth experiments in spherically convergent geometry". United States. doi:10.1063/1.874024.
@article{osti_20216067,
title = {Ablation front Rayleigh-Taylor growth experiments in spherically convergent geometry},
author = {Glendinning, S. G. and Colvin, J. and Haan, S. and Kalantar, D. H. and Landen, O. L. and Marinak, M. M. and Remington, B. A. and Wallace, R. and Cherfils, C. and Dague, N.},
abstractNote = {Experiments were performed on the Nova laser [E. M. Campbell et al., Rev. Sci. Instrum. 57, 2101 (1986)], using indirectly driven capsules mounted in cylindrical gold hohlraums, to measure the Rayleigh-Taylor growth at the ablation front by time-resolved radiography. Modulations were preformed on the surface of Ge-doped plastic capsules. With initial modulation amplitude of 2-2.5 {mu}m, growth factors of about six in optical depth were seen, in agreement with simulations using the radiation hydrocode FCI2 [G. Schurtz, La fusion thermonucleaire inertielle par laser, edited by R. Dautray et al. (Eyrolles, Paris, 1994), Vol. 2]. With initial modulation amplitude of 0.5 {mu}m and a longer drive, growth factors of about 100-150 in optical depth were seen. Comparable planar experiments showed growth factors of about 40 in optical depth. Analytical models predict the observed growth factors. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.874024},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 5,
volume = 7,
place = {United States},
year = {2000},
month = {5}
}