Thermal measuring and testing – Temperature measurement – Nonelectrical – nonmagnetic – or nonmechanical temperature...
Patent
1984-12-26
1988-09-06
Frankfort, Charles
Thermal measuring and testing
Temperature measurement
Nonelectrical, nonmagnetic, or nonmechanical temperature...
374127, 374143, 73714, G01K 1120
Patent
active
047688866
ABSTRACT:
Method and apparatus are provided for simultaneously measuring temperature and pressure in a class of crystalline materials having anisotropic thermal coefficients and having a coefficient of linear compression along the crystalline c-axis substantially the same as those perpendicular thereto. Temperature is determined by monitoring the fluorescence half life of a probe of such crystalline material, e.g., ruby. Pressure is determined by monitoring at least one other fluorescent property of the probe that depends on pressure and/or temperature, e.g., absolute fluorescent intensity or frequency shifts of fluorescent emission lines.
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Haugen Gilbert R.
Hirschfeld Tomas B.
Frankfort Charles
Macevicz Stephen C.
Sartorio Henry P.
The Regents of the University of California
Will Thomas B.
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