Low-temperature phosphor thermometry: Calibration of europium-doped lanthanum oxysulfide between room temperature and minus 194 degrees C

Technical Report · Thu Feb 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/7157629· OSTI ID:7157629

Simmons, C M; Beshears, D L; Cates, M R

Remote-temperature measurements can be accomplished by inducing fluorescence in doped phosphors and measuring emission lifetimes. Some phosphors have been calibrated for high temperature measurement from room temperature to about 1200{degree}C and are proving useful where remote sensing is require. Attention is now turned to remote thermal sensing at low-temperature ranges. Because is has strong emission spectra at low temperatures, as well as relatively high temperatures, lanthanum oxysulfide (La{sub 2}O{sub 2}S:Eu) is now being calibrated at low temperatures. The temperature range of concern in this paper is from about {minus}194{degree}C to room temperature. 3 refs., 7 figs.

• Research Organization: Oak Ridge National Lab., TN (USA). Applied Technology Div.
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7157629
• Report Number(s): ORNL/ATD-25; ON: DE90007917
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
47 OTHER INSTRUMENTATION
EUROPIUM
EMISSION SPECTRA
LANTHANUM COMPOUNDS
OXYSULFIDES
DOPED MATERIALS
EXCITED STATES
FLUORESCENCE
LOW TEMPERATURE
PHOSPHORS
REMOTE SENSING
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
ELEMENTS
ENERGY LEVELS
LUMINESCENCE
MATERIALS
METALS
OXYGEN COMPOUNDS
RARE EARTH COMPOUNDS
RARE EARTHS
SPECTRA
SULFUR COMPOUNDS
360603* - Materials- Properties
440500 - Thermal Instrumentation- (1990-)