In this section
@article{Winters:2014:18/182044,
author = {Winters, JBR and Bland, SN and Stafford, SJP and Chapman, DJ and Eakins, DE},
doi = {18/182044},
journal = {Journal of Physics: Conference Series},
title = {VISAR 'cross-hairs': Simultaneous perpendicular line-imaging VISAR},
url = {http://dx.doi.org/10.1088/1742-6596/500/18/182044},
volume = {500},
year = {2014}
}
TY - JOUR
AB - Often the velocity measured at the rear surface of a dynamic compression targetvaries spatially, caused for instance by the tilt/curvature of a gas gun flyer, asymmetries inthe magnetic field on a pulsed power driven experiment, or meso-scale heterogeneous targets.One way to monitor this in an experiment is to employ multiple point velocimetry techniques,but even with multiplexing this can become expensive in terms of hardware, in particular highspeed sensors and scope channels. We report on the initial development of a multi-axis lineimagingVISAR system, which will record the spatial velocity along two orthogonal directions.Cylindrical optics are used to project a set of cross-hairs onto the target, maximising the use ofinput laser light; we then describe the image relay, interferometer configuration and alignment.This ‘quasi’ two dimensional system will become one of the principal diagnostics on the MACH(Mega Ampere Compression and Hydrodynamics) facility at Imperial College London, where themulti-axis measurement will help optimise strip-line design to achieve uniform ramp compressionof targets.
AU - Winters,JBR
AU - Bland,SN
AU - Stafford,SJP
AU - Chapman,DJ
AU - Eakins,DE
DO - 18/182044
PY - 2014///
SN - 1742-6588
TI - VISAR 'cross-hairs': Simultaneous perpendicular line-imaging VISAR
T2 - Journal of Physics: Conference Series
UR - http://dx.doi.org/10.1088/1742-6596/500/18/182044
UR - http://hdl.handle.net/10044/1/27039
VL - 500
ER -
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