Bibliographic Citation

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Title: The Characterization of Scintillator Performance at Temperatures up to 400 Degrees Centigrade
Creator/Author: Boatner, Lynn A [ORNL] ; Neal, John S [ORNL] ; Kolopus, James A [ORNL] ; Ramey, Joanne Oxendine [ORNL] ; Akkurt, Hatice [ORNL]
Publication Date:2013 Jan 01
OSTI Identifier:OSTI 1067307
Report Number(s):None
DOE Contract Number:DE-AC05-00OR22725
Document Type:Journal Article
Specific Type:
Resource Relation:Journal Name: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment; Journal Volume: 709
Other Number(s):
Research Org:Oak Ridge National Laboratory (ORNL)
Sponsoring Org:ORNL work for others
Keywords:scintillator; temperature variation; gamma ray; well logging; geothermal
Description/Abstract:The logging and characterization of geothermal wells requires improved scintillator systems that are capable of operation at temperatures significantly above those commonly encountered in the logging of most conventional oil and gas wells (e.g., temperatures nominally in the range of up to 150oC.) Unfortunately, most of the existing data on the performance of scintillators for radiation detection at elevated temperatures is fragmentary, uncorrelated, and generally limited to relatively low temperatures in most cases to temperatures well below 200oC. We have designed a system for characterizing scintillator performance at temperatures extending up to 400oC under inert atmospheric conditions, and this system is applied here to the determination of scintillator performance at elevated temperatures for a wide range of scintillators including, among others: bismuth germanate, cadmium tungstate, cesium iodide, cesium iodide (Tl), cesium iodide (Na), sodium iodide, sodium iodide (Tl), lutetium oxy-orthosilicate (Ce), zinc tungstate, yttrium aluminum perovskite (Ce), yttrium aluminum garnet (Ce), lutetium aluminum perovskite (Ce), and barium fluoride, strontium iodide(Eu). The results of these high-temperature scintillator performance tests are described in detail here. Comparisons of the relative elevated-temperature properties of the various scintillator materials have resulted in the identification of promising scintillator candidates for high-temperature use in geothermal and fossil-fuel well environments.
Country of Publication:US
Size/Format:Medium: X; Size: 95-107
System Entry Date:2013 Jun 06
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