A simple and portable multi-channel pyrometer allowing temperature measurements down to 800 K on the microsecond scale

Montgomery, J. M.; Lipp, M. J.; Jenei, Zs.; Meng, Y.; Evans, W. J.

doi:10.1063/1.5048784

Title: A simple and portable multi-channel pyrometer allowing temperature measurements down to 800 K on the microsecond scale

Journal Article · 30 November 2018 · Review of Scientific Instruments

DOI: https://doi.org/10.1063/1.5048784 · OSTI ID:1497263

Montgomery, J. M. ^[1]; Lipp, M. J. ^[1];

^[1]; Meng, Y. ^[1];

^[1]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

The measurement of transient temperatures less than 1000 K for samples in laser-heated diamond anvil cells remains a challenge. Here we present the design and performance characteristics of a multi-channel pyrometer that works in the near-infrared from 1200 to 2000 nm. It has a relatively small footprint, is portable, requires only low voltage power supplies, and can report temperatures down to 800 K on the millisecond scale or faster. Here, a single data point without averaging can be acquired in 14 µs (sampling rate of 7 kilosamples per second). In conjunction with a diamond anvil cell, the system delivers accurate and rapid measurements down to ~830 K. The pyrometer has been successfully interfaced several times with the combined x-ray diffraction and laser heating system at the High Pressure Collaborative Access Team at the Advanced Photon Source at Argonne National Laboratories.

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Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

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

Grant/Contract Number:: AC52-07NA27344

OSTI ID:: 1497263

Report Number(s):: LLNL-JRNL--746476; 931096

Journal Information:: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 12 Vol. 89; ISSN 0034-6748

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

Country of Publication:: United States

Language:: English

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