skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: High temperature thermometric phosphors for use in a temperature sensor

Abstract

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.

Inventors:
 [1];  [2];  [2];  [3]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
  3. (Earlysville, VA)
Publication Date:
Research Org.:
LOCKHEED MARTIN ENRGY SYST INC
OSTI Identifier:
871428
Patent Number(s):
US 5730528
Assignee:
Lockheed Martin Energy Systems, Inc. (Oak Ridge, TN) ORNL
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
temperature; thermometric; phosphors; sensor; phosphor; consists; essentially; material; formula; lupo; eu; wt; ltoreq; 20; contact; article; determined; placed; environment; excited; laser; causing; fluoresce; emission; optically; focused; beam-splitting; mirror; separates; separate; emissions; caused; dysprosium; dopant; europium; dopent; separated; filtered; intensities; detected; measured; ratio; intensity; calculated; temperature sensor; consists essentially; temperature phosphor; thermometric phosphors; temperature thermometric; formula lupo; temperature ph; phosphor consists; /374/250/

Citation Formats

Allison, Stephen W., Cates, Michael R., Boatner, Lynn A., and Gillies, George T. High temperature thermometric phosphors for use in a temperature sensor. United States: N. p., 1998. Web.
Allison, Stephen W., Cates, Michael R., Boatner, Lynn A., & Gillies, George T. High temperature thermometric phosphors for use in a temperature sensor. United States.
Allison, Stephen W., Cates, Michael R., Boatner, Lynn A., and Gillies, George T. Thu . "High temperature thermometric phosphors for use in a temperature sensor". United States. doi:. https://www.osti.gov/servlets/purl/871428.
@article{osti_871428,
title = {High temperature thermometric phosphors for use in a temperature sensor},
author = {Allison, Stephen W. and Cates, Michael R. and Boatner, Lynn A. and Gillies, George T.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Jan 01 00:00:00 EST 1998},
month = {Thu Jan 01 00:00:00 EST 1998}
}

Patent:

Save / Share: