Temperature Measurement in a Laser-Heated Diamond Cell
- Murli H. Manghnani and
- Yasuhiko Syono
Published Online: 21 MAR 2013
Copyright © 1987 by Terra Scientific Publishing Company (TERRAPUB), Tokyo.
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
- Published Online: 21 MAR 2013
- Published Print: 1 JAN 1987
Print ISBN: 9780875900667
Online ISBN: 9781118664124
- Mineralogy and Crystal Chemistry;
- Phase transformations;
- High Pressure-High Temperature Research
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.