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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 5, Iss. 11 — Nov. 10, 2007
  • pp: 642–644

Measurement of thermophysical properties by a pulse-heating technique

Peng Xiao, Jingmin Dai, and Qingwei Wang  »View Author Affiliations


Chinese Optics Letters, Vol. 5, Issue 11, pp. 642-644 (2007)


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Abstract

A technique is described for the dynamic measurement of selected thermophysical properties of electrically conducting solids in the temperature range from 1100 K to the melting point. Based on rapid resistive self-heating of the specimen from room temperature to any desired high temperature in several seconds by the passage of an electical current pulse through it, this technique measures the pertinent quantities such as current, voltage, randiance temperature, with sub-millisecond time resolution. The pulse-heating technique is applied to strip specimens. The radiance temperature is measured by high-speed pyrometry, normal spectral emissivity of the strips is measured by integrating sphere reflectometry. The normal spectral emissivity results are used to compute the true temperature of the specimens. The heat capacity, electrical resistivity, total hemispherical emissivity are evaluated in the temperature range from 1100 K to the melting point.

© 2007 Chinese Optics Letters

OCIS Codes
(000.6850) General : Thermodynamics
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(300.2140) Spectroscopy : Emission

Citation
Peng Xiao, Jingmin Dai, and Qingwei Wang, "Measurement of thermophysical properties by a pulse-heating technique," Chin. Opt. Lett. 5, 642-644 (2007)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-5-11-642


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References

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