High temperature thermometric phosphors for use in a temperature sensor
- Knoxville, TN
- Oak Ridge, TN
- Earlysville, VA
A high temperature phosphor consists essentially of a material having the general formula LuPO.sub.4 :Dy.sub.(x),Eu.sub.(y), wherein: 0.1 wt %.ltoreq.x.ltoreq.20 wt % and 0.1 wt %.ltoreq.y.ltoreq.20 wt %. The high temperature phosphor is in contact with an article whose temperature is to be determined. The article having the phosphor in contact with it is placed in the environment for which the temperature of the article is to be determined. The phosphor is excited by a laser causing the phosphor to fluoresce. The emission from the phosphor is optically focused into a beam-splitting mirror which separates the emission into two separate emissions, the emission caused by the dysprosium dopant and the emission caused by the europium dopent. The separated emissions are optically filtered and the intensities of the emission are detected and measured. The ratio of the intensity of each emission is determined and the temperature of the article is calculated from the ratio of the intensities of the separate emissions.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN)
- Patent Number(s):
- US 5730528
- OSTI ID:
- 871428
- Country of Publication:
- United States
- Language:
- English
Lanthanide Orthophosphates as a Matrix for Solidified Radioactive Defense and Reactor Wastes
|
journal | January 1981 |
Characterization of high-temperature thermographic phosphors: spectral properties of LuPO_4:Dy(1%),Eu(2%)
|
journal | January 1995 |
Emission properties of europium-doped lanthanum and lutetium orthophosphate crystals for use in high temperature sensor applications
|
conference | January 1989 |
Raman spectra of the rare earth orthophosphates
|
journal | August 1981 |
The observation by EPR of trivalent hafnium in LuPO 4 , YPO 4 , and ScPO 4
|
journal | September 1985 |
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High temperature thermometric phosphors for use in a temperature sensor
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dysprosium
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europium
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