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Using the ROSS optical streak camera as a tool to understand laboratory experiments of laser-driven magnetized shock waves

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Abstract

Supersonic flows with high Mach number are ubiquitous in astrophysics. High-powered lasers also have the ability to drive high Mach number, radiating shock waves in laboratory plasmas, and recent experiments along these lines have made it possible to recreate analogs of high Mach-number astrophysical flows under controlled conditions. Streak cameras such as the Rochester optical streak system (ROSS) are particularly helpful in diagnosing such experiments, because they acquire spatially resolved measurements of the radiating gas continuously over a large time interval, making it easy to observe how any shock waves and ablation fronts present in the system evolve with time. This paper summarizes new ROSS observations of a laboratory analog of the collision of a stellar wind with an ablating planetary atmosphere embedded within a magnetosphere. We find good agreement between the observed ROSS data and numerical models obtained with the FLASH code, but only when the effects of optical depth are properly taken into account.

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DOI:10.1017/hpl.2018.17

基金项目:This work was made possible thanks to the DOE NLUF program DE-FOA-0001568, the Data Analysis and Visualization CyberInfrastructure program OCI-0959097, Rice University, and the Laboratory for Laser Energetics.

收稿日期:2017-12-01

录用日期:2018-01-22

网络出版日期:2018-03-07

作者单位    点击查看

Andy Liao:Rice University, USA
Patrick Hartigan:Rice University, USA
Gennady Fiksel:University of Michigan - Ann Arbor, USA
Brent Blue:Lawrence Livermore National Laboratory, USA
Peter Graham:Awe Plc, UK
John Foster:Awe Plc, UK
Carolyn Kuranz:University of Michigan - Ann Arbor, USA

联系人作者:Andy Liao(Andy.Liao@rice.edu)

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引用该论文

Andy Liao, Patrick Hartigan, Gennady Fiksel, Brent Blue, Peter Graham, John Foster, and Carolyn Kuranz, "Using the ROSS optical streak camera as a tool to understand laboratory experiments of laser-driven magnetized shock waves," High Power Laser Science and Engineering 6(2), e22 (2018)

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