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Measurement of the shell decompression in direct-drive inertial-confinement-fusion implosions

D. T. Michel, S. X. Hu, A. K. Davis, V. Yu. Glebov, V. N. Goncharov, I. V. Igumenshchev, P. B. Radha, C. Stoeckl, and D. H. Froula
Phys. Rev. E 95, 051202(R) – Published 10 May 2017

Abstract

A series of direct-drive implosions performed on OMEGA were used to isolate the effect of an adiabat on the in-flight shell thickness. The maximum in-flight shell thickness was measured to decrease from 75±2 to 60±2μm when the adiabat of the shell was reduced from 6 to 4.5, but when decreasing the adiabat further (1.8), the shell thickness increased to 75±2μm due to the growth of the Rayleigh-Taylor instability. Hydrodynamic simulations suggest that a laser imprint is the dominant seed for these nonuniformities.

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  • Received 31 May 2016

DOI:https://doi.org/10.1103/PhysRevE.95.051202

©2017 American Physical Society

Physics Subject Headings (PhySH)

Plasma Physics

Authors & Affiliations

D. T. Michel*, S. X. Hu, A. K. Davis, V. Yu. Glebov, V. N. Goncharov, I. V. Igumenshchev, P. B. Radha, C. Stoeckl, and D. H. Froula

  • Laboratory for Laser Energetics, University of Rochester, Rochester, New York 14636, USA

  • *tmic@lle.rochester.edu

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Issue

Vol. 95, Iss. 5 — May 2017

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