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Title: Multiwavelength optical pyrometer for shock compression experiments. [100 GPa]

Abstract

A system for measurement of the spectral radiance of materials shocked to high pressures (approx.100 GPa) by impact using a light gas gun is described. Thermal radiation from the sample is sampled at six wavelength bands in the visible spectrum, and each signal is separately detected by solid-state photodiodes, and recorded with a time resolution of approx.10 ns. Interpretation of the records in terms of temperature of transparent sample materials is discussed. Results of a series of exploratory experiments with metals are also given. Shock temperatures in the range 4000--8000 K have been reliably measured. Spectral radiance and temperatures have been determined with uncertainties of 2%.

Authors:
;
Publication Date:
Research Org.:
Seismological Laboratory, California Institute of Technology, Pasadena, California 91125
OSTI Identifier:
6012134
Resource Type:
Journal Article
Journal Name:
Rev. Sci. Instrum.; (United States)
Additional Journal Information:
Journal Volume: 50:11
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; 36 MATERIALS SCIENCE; METALS; COMPRESSION; OPTICAL PROPERTIES; OPTICAL PYROMETERS; DATA; GASES; PHOTODIODES; RADIANT FLUX DENSITY; SHOCK WAVES; SPECTRA; THERMAL RADIATION; TIME RESOLUTION; VERY HIGH PRESSURE; VISIBLE RADIATION; WAVELENGTHS; ELECTROMAGNETIC RADIATION; ELEMENTS; FLUIDS; FLUX DENSITY; INFORMATION; MEASURING INSTRUMENTS; PHYSICAL PROPERTIES; PYROMETERS; RADIATIONS; RESOLUTION; SEMICONDUCTOR DEVICES; SEMICONDUCTOR DIODES; TIMING PROPERTIES; 440300* - Miscellaneous Instruments- (-1989); 360103 - Metals & Alloys- Mechanical Properties; 360104 - Metals & Alloys- Physical Properties

Citation Formats

Lyzenga, G A, and Ahrens, T J. Multiwavelength optical pyrometer for shock compression experiments. [100 GPa]. United States: N. p., 1979. Web. doi:10.1063/1.1135731.
Lyzenga, G A, & Ahrens, T J. Multiwavelength optical pyrometer for shock compression experiments. [100 GPa]. United States. https://doi.org/10.1063/1.1135731
Lyzenga, G A, and Ahrens, T J. 1979. "Multiwavelength optical pyrometer for shock compression experiments. [100 GPa]". United States. https://doi.org/10.1063/1.1135731.
@article{osti_6012134,
title = {Multiwavelength optical pyrometer for shock compression experiments. [100 GPa]},
author = {Lyzenga, G A and Ahrens, T J},
abstractNote = {A system for measurement of the spectral radiance of materials shocked to high pressures (approx.100 GPa) by impact using a light gas gun is described. Thermal radiation from the sample is sampled at six wavelength bands in the visible spectrum, and each signal is separately detected by solid-state photodiodes, and recorded with a time resolution of approx.10 ns. Interpretation of the records in terms of temperature of transparent sample materials is discussed. Results of a series of exploratory experiments with metals are also given. Shock temperatures in the range 4000--8000 K have been reliably measured. Spectral radiance and temperatures have been determined with uncertainties of 2%.},
doi = {10.1063/1.1135731},
url = {https://www.osti.gov/biblio/6012134}, journal = {Rev. Sci. Instrum.; (United States)},
number = ,
volume = 50:11,
place = {United States},
year = {Thu Nov 01 00:00:00 EST 1979},
month = {Thu Nov 01 00:00:00 EST 1979}
}