Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments

Wan, W. C.; Malamud, Guy; Shimony, A.; Di Stefano, C. A.; Trantham, M. R.; Klein, S. R.; Soltis, J. D.; Shvarts, D.; Drake, R. P.; Kuranz, C. C.

doi:10.1016/j.hedp.2016.12.001

Title: Impact of ablator thickness and laser drive duration on a platform for supersonic, shockwave-driven hydrodynamic instability experiments

Journal Article · Wed Dec 07 00:00:00 EST 2016 · High Energy Density Physics

DOI:https://doi.org/10.1016/j.hedp.2016.12.001· OSTI ID:1444112

^[1]; Malamud, Guy ^[2];

^[3];

^[4]; Trantham, M. R. ^[1]; Klein, S. R. ^[1];

^[1]; Shvarts, D. ^[5]; Drake, R. P. ^[1]; Kuranz, C. C. ^[1]

Univ. of Michigan, Ann Arbor, MI (United States)
Univ. of Michigan, Ann Arbor, MI (United States); Nuclear Research Center - Negev (Israel)
Nuclear Research Center - Negev (Israel); Ben Gurion Univ. of the Negev (Israel)
Univ. of Michigan, Ann Arbor, MI (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of Michigan, Ann Arbor, MI (United States); Nuclear Research Center - Negev (Israel); Ben Gurion Univ. of the Negev (Israel)

Here, we discuss changes to a target design that improved the quality and consistency of data obtained through a novel experimental platform that enables the study of hydrodynamic instabilities in a compressible regime. The experiment uses a laser to drive steady, supersonic shockwave over well-characterized initial perturbations. Early experiments were adversely affected by inadequate experimental timescales and, potentially, an unintended secondary shockwave. These issues were addressed by extending the 4 x 10¹³ W/cm² laser pulse from 19 ns to 28 ns, and increasing the ablator thickness from 185 µm to 500 µm. We present data demonstrating the performance of the platform.

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Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0002956; NA0002719; NA0001944; B614207 to AC52-07NA27344

OSTI ID:: 1444112

Alternate ID(s):: OSTI ID: 1419545

Journal Information:: High Energy Density Physics, Vol. 22, Issue C; ISSN 1574-1818

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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Cited By (1)

Construction and validation of a statistical model for the nonlinear Kelvin-Helmholtz instability under compressible, multimode conditions Shimony, A.; Wan, W. C.; Klein, S. R. Physics of Plasmas, Vol. 25, Issue 12 https://doi.org/10.1063/1.5060958	journal	December 2018

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Hydrodynamic instabilities
Supersonic
Compressible
Reshock
Kelvin–Helmholtz