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An efficient method for unfolding kinetic pressure driven VISAR data

Journal Article · · High Power Laser Science and Engineering
DOI:https://doi.org/10.1017/hpl.2015.23· OSTI ID:1237375
 [1];  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
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Velocity Interferometer System for Any Reflector (VISAR) [Barker and Hollenbach, J. Appl. Phys. 43, 4669 (1972)] is a well-known diagnostic that is employed on many shock physics and pulsed-power experiments. With the VISAR diagnostic, the velocity on the surface of any metal flyer can be found. For most experiments employing VISAR, either a kinetic pressure [Grady, Mech. Mater. 29, 181 (1998)] or a magnetic pressure [Lemke et al., Intl J. Impact Eng. 38, 480 (2011)] drives the motion of the flyer. Moreover, reliable prediction of the time-dependent pressure is often a critical component to understanding the physics of these experiments. Although VISAR can provide a precise measurement of a flyer’s surface velocity, the real challenge of this diagnostic implementation is using this velocity to unfold the time-dependent pressure. The purpose of this study is to elucidate a new method for quickly and reliably unfolding VISAR data.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA)
Grant/Contract Number:
AC04-94AL85000
OSTI ID:
1237375
Alternate ID(s):
OSTI ID: 1237667
Report Number(s):
SAND--2015-1346J; SAND--2015-5043J; 567202
Journal Information:
High Power Laser Science and Engineering, Journal Name: High Power Laser Science and Engineering Journal Issue: 3 Vol. 3; ISSN 2095-4719
Publisher:
Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

42 ENGINEERING
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
VISAR
laser driven blast wave
pulsed-power