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Title: Simultaneous broadband laser ranging and photonic Doppler velocimetry for dynamic compression experiments

Abstract

A diagnostic was developed to simultaneously measure both the distance and velocity of rapidly moving surfaces in dynamic compression experiments, specifically non-planar experiments where integrating the velocity in one direction does not always give the material position accurately. The diagnostic is constructed mainly from fiber-optic telecommunications components. The distance measurement is based on a technique described by Xia and Zhang [Opt. Express 18, 4118 (2010)], which determines the target distance every 20 ns and is independent of the target speed. We have extended the full range of the diagnostic to several centimeters to allow its use in dynamic experiments, and we multiplexed it with a photonic Doppler velocimetry (PDV) system so that distance and velocity histories can be measured simultaneously using one fiber-optic probe. The diagnostic was demonstrated on a spinning square cylinder to show how integrating a PDV record can give an incorrect surface position and how the ranging diagnostic described here obtains it directly. The diagnostic was also tested on an explosive experiment where copper fragments and surface ejecta were identified in both the distance and velocity signals. We show how the distance measurements complement the velocity data. Potential applications are discussed.

Authors:
; ; ;  [1];  [2]
  1. National Security Technologies, LLC, Special Technologies Laboratory, Santa Barbara, California 93111 (United States)
  2. National Security Technologies, LLC, Los Alamos Operations, Los Alamos, New Mexico 87544 (United States)
Publication Date:
OSTI Identifier:
22392541
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 86; Journal Issue: 2; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; COMPRESSION; COPPER; CYLINDERS; DISTANCE; FIBERS; LASERS; PROBES; SURFACES; VELOCITY

Citation Formats

La Lone, B. M., E-mail: lalonebm@nv.doe.gov, Marshall, B. R., Miller, E. K., Stevens, G. D., Turley, W. D., and Veeser, L. R. Simultaneous broadband laser ranging and photonic Doppler velocimetry for dynamic compression experiments. United States: N. p., 2015. Web. doi:10.1063/1.4908306.
La Lone, B. M., E-mail: lalonebm@nv.doe.gov, Marshall, B. R., Miller, E. K., Stevens, G. D., Turley, W. D., & Veeser, L. R. Simultaneous broadband laser ranging and photonic Doppler velocimetry for dynamic compression experiments. United States. https://doi.org/10.1063/1.4908306
La Lone, B. M., E-mail: lalonebm@nv.doe.gov, Marshall, B. R., Miller, E. K., Stevens, G. D., Turley, W. D., and Veeser, L. R. 2015. "Simultaneous broadband laser ranging and photonic Doppler velocimetry for dynamic compression experiments". United States. https://doi.org/10.1063/1.4908306.
@article{osti_22392541,
title = {Simultaneous broadband laser ranging and photonic Doppler velocimetry for dynamic compression experiments},
author = {La Lone, B. M., E-mail: lalonebm@nv.doe.gov and Marshall, B. R. and Miller, E. K. and Stevens, G. D. and Turley, W. D. and Veeser, L. R.},
abstractNote = {A diagnostic was developed to simultaneously measure both the distance and velocity of rapidly moving surfaces in dynamic compression experiments, specifically non-planar experiments where integrating the velocity in one direction does not always give the material position accurately. The diagnostic is constructed mainly from fiber-optic telecommunications components. The distance measurement is based on a technique described by Xia and Zhang [Opt. Express 18, 4118 (2010)], which determines the target distance every 20 ns and is independent of the target speed. We have extended the full range of the diagnostic to several centimeters to allow its use in dynamic experiments, and we multiplexed it with a photonic Doppler velocimetry (PDV) system so that distance and velocity histories can be measured simultaneously using one fiber-optic probe. The diagnostic was demonstrated on a spinning square cylinder to show how integrating a PDV record can give an incorrect surface position and how the ranging diagnostic described here obtains it directly. The diagnostic was also tested on an explosive experiment where copper fragments and surface ejecta were identified in both the distance and velocity signals. We show how the distance measurements complement the velocity data. Potential applications are discussed.},
doi = {10.1063/1.4908306},
url = {https://www.osti.gov/biblio/22392541}, journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 2,
volume = 86,
place = {United States},
year = {Sun Feb 15 00:00:00 EST 2015},
month = {Sun Feb 15 00:00:00 EST 2015}
}