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Title: Measuring preheat in laser-drive aluminum using velocity interferometer system for any reflector: Experiment

Abstract

In this paper, we systematically study preheating in laser-direct-drive shocks by using a velocity interferometer system for any reflector (VISAR). Using the VISAR, we measured free surface velocity histories of Al samples over time, 10–70 μm thick, driven directly by a laser at different frequencies (2ω, 3ω). Analyzing our experimental results, we concluded that the dominant preheating source was X-ray radiation. We also discussed how preheating affected the material initial density and the measurement of Hugoniot data for high-Z materials (such as Au) using impedance matching. To reduce preheating, we proposed and tested three kinds of targets.

Authors:
; ; ; ; ; ; ; ;  [1]
  1. Shanghai Institute of Laser Plasma, P.O. BOX 800-229, Shanghai 201800 (China)
Publication Date:
OSTI Identifier:
22303783
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 8; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ALUMINIUM; HEAT TREATMENTS; IMPEDANCE; INTERFEROMETERS; LASERS; MATERIALS; SURFACES; VELOCITY; X RADIATION

Citation Formats

Shu, Hua, Fu, Sizu, Huang, Xiuguang, Wu, Jiang, Xie, Zhiyong, Zhang, Fan, Ye, Junjian, Jia, Guo, and Zhou, Huazhen. Measuring preheat in laser-drive aluminum using velocity interferometer system for any reflector: Experiment. United States: N. p., 2014. Web. doi:10.1063/1.4891429.
Shu, Hua, Fu, Sizu, Huang, Xiuguang, Wu, Jiang, Xie, Zhiyong, Zhang, Fan, Ye, Junjian, Jia, Guo, & Zhou, Huazhen. Measuring preheat in laser-drive aluminum using velocity interferometer system for any reflector: Experiment. United States. doi:10.1063/1.4891429.
Shu, Hua, Fu, Sizu, Huang, Xiuguang, Wu, Jiang, Xie, Zhiyong, Zhang, Fan, Ye, Junjian, Jia, Guo, and Zhou, Huazhen. Fri . "Measuring preheat in laser-drive aluminum using velocity interferometer system for any reflector: Experiment". United States. doi:10.1063/1.4891429.
@article{osti_22303783,
title = {Measuring preheat in laser-drive aluminum using velocity interferometer system for any reflector: Experiment},
author = {Shu, Hua and Fu, Sizu and Huang, Xiuguang and Wu, Jiang and Xie, Zhiyong and Zhang, Fan and Ye, Junjian and Jia, Guo and Zhou, Huazhen},
abstractNote = {In this paper, we systematically study preheating in laser-direct-drive shocks by using a velocity interferometer system for any reflector (VISAR). Using the VISAR, we measured free surface velocity histories of Al samples over time, 10–70 μm thick, driven directly by a laser at different frequencies (2ω, 3ω). Analyzing our experimental results, we concluded that the dominant preheating source was X-ray radiation. We also discussed how preheating affected the material initial density and the measurement of Hugoniot data for high-Z materials (such as Au) using impedance matching. To reduce preheating, we proposed and tested three kinds of targets.},
doi = {10.1063/1.4891429},
journal = {Physics of Plasmas},
number = 8,
volume = 21,
place = {United States},
year = {Fri Aug 15 00:00:00 EDT 2014},
month = {Fri Aug 15 00:00:00 EDT 2014}
}