A multi-wavelength streaked optical pyrometer for dynamic shock compression measurements above 2500 K

Opachich, Y. P.; Crum, R. S.; Daene, M. W.; Dutra, E. C.; Mehta, H. N.; Shelton, H. L.; Watts, P.; Akin, M. C.

doi:10.1063/1.5126123

A multi-wavelength streaked optical pyrometer for dynamic shock compression measurements above 2500 K

Journal Article · Mon Mar 23 00:00:00 EDT 2020 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.5126123· OSTI ID:1727439

^[1]; Crum, R. S. ^[1]; Daene, M. W. ^[1]; ^[2]; Mehta, H. N. ^[3]; ^[1]; Watts, P. ^[1]; ^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Nevada National Security Site, Livermore, CA (United States)
Univ. of California, Irvine, CA (United States)

This work presents a concept and implementation of a calibrated streaked spectral pyrometer (SSP) temperature diagnostic used in dynamically driven shock experiments on a two-stage gas gun. This system relies upon measuring the total system response using a tunable monochromator, a NIST-traceable calibrated power meter, and a SSP. The diagnostic performance is validated against previously measured temperatures of shock driven z-cut quartz at 99 GPa and 93 GPa. The results are found to agree with the literature to within 5% and are discussed in this manuscript. The experimental setup utilizes measurements from multiple SSP systems per sample, providing several independent measurements and substantially increasing confidence in the extrapolated shock driven sample temperature.

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Nevada National Security Site/Mission Support and Test Services LLC

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344; NA0003624

OSTI ID:: 1727439

Alternate ID(s):: OSTI ID: 1605955
OSTI ID: 1833801

Report Number(s):: DOE/NV/03624--0596; LLNL-JRNL--788661; STIP WF - 17479846

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 3 Vol. 91; ISSN 0034-6748

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Emission spectroscopy
Equations of state
Monochromators
Photocathodes
Shock compression
Streak cameras
Thermal instruments

A multi-wavelength streaked optical pyrometer for dynamic shock compression measurements above 2500 K

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References (11)

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