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

Journal Article · Thu Nov 01 00:00:00 EST 1979 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1135731· OSTI ID:6012134

Lyzenga, G A; Ahrens, T J

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%.

• Research Organization: Seismological Laboratory, California Institute of Technology, Pasadena, California 91125
• OSTI ID: 6012134
• Journal Information: Rev. Sci. Instrum.; (United States), Vol. 50:11
• Country of Publication: United States
• Language: English

Related Subjects

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