Temperature Measurement in a Laser-Heated Diamond Cell

  1. Murli H. Manghnani and
  2. Yasuhiko Syono
  1. William A. Bassett and
  2. Maura S. Weathers

Published Online: 21 MAR 2013

DOI: 10.1029/GM039p0129

High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto

High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto

How to Cite

Bassett, W. A. and Weathers, M. S. (1987) Temperature Measurement in a Laser-Heated Diamond Cell, in High-Pressure Research in Mineral Physics: A Volume in Honor of Syun-iti Akimoto (eds M. H. Manghnani and Y. Syono), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM039p0129

Author Information

  1. Department of Geological Science, Cornell University, Ithaca, New York 14853, USA

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1987

ISBN Information

Print ISBN: 9780875900667

Online ISBN: 9781118664124

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Keywords:

  • Mineralogy and Crystal Chemistry;
  • Phase transformations;
  • High Pressure-High Temperature Research

Summary

Infrared light from a YAG laser is used to heat samples under pressure in a diamond-anvil cell. The incandescent light from the hot sample is analyzed by a diffraction grating spectrometer and the spectra are collected by a photodiode array and stored in a multichannel analyzer. Each spectrum is corrected for response of the detector and then fit to a blackbody curve to determine the temperature. Laser pulses from 10 to 50 msec duration are used in the temperature range from 1500 K to 3500 K and pulses of 200 nsec duration produced by a Q-switched YAG laser are used for temperatures in the range from 3500 K to 10,000 K. Pressure is measured by means of the ruby fluorescence method using green light from frequency-doubled radiation from the YAG laser to excite the fluorescence.

Methods for detecting phase changes in the samples include optical microscopy, transmission and scanning electron microscopy, and X-ray diffraction.