Measuring tritium with exoelectron dosimeters

Journal Article · Fri Aug 01 04:00:00 EDT 1975 · Nucl. Instrum. Methods, v. 127, no. 2, pp. 279-284

DOI:https://doi.org/10.1016/0029-554X(75)90500-5· OSTI ID:4128518

Gammage, R B; Cheka, J S

Small disks of ceramic BeO, called Thermalox 995, are sensitive detectors of tritium when read for thermally stimulated exoelectron emission (TSEE). An additional reading of the thermoluminescence provides a means for estimating the exposure to tritium in the presence of other penetrating radiations. Weakly contaminated surfaces less than 1 nCi/cm$sup 2$, which are small, curved, or difficult to reach, can be monitored accurately. While the detector sensitivity is sufficient to measure tritium gas or tritiated water vapor at allowable, occupational exposure levels, the sensitivity of this particular detector is insufficient for monitoring members of the public exposed continuously to HTO vapor at the MPC. The TSEE peak location and shape are useful features for identifying an exposure to tritium. Prior to reading, rinsing the detector in alcohol is desirable to prevent spurious electron emissions. (NL)

• Research Organization: Oak Ridge National Lab., Tenn. (USA)
• NSA Number: NSA-33-009356
• OSTI ID: 4128518
• Journal Information: Nucl. Instrum. Methods, v. 127, no. 2, pp. 279-284, Journal Name: Nucl. Instrum. Methods, v. 127, no. 2, pp. 279-284; ISSN NUIMA
• Country of Publication: Netherlands
• Language: English

Related Subjects

*EXOELECTRON DOSEMETERS-- PERFORMANCE
*TRITIUM-- RADIATION MONITORING
440102* --Instrumentation--Radiation Instrumentation-- Radiation Dosemeters
BERYLLIUM OXIDES
EMISSION
EXOELECTRONS
N40130 --Chemistry--Analytical & Separations Chemistry--Radiometric & Radiochemical Procedures
N46120* --Instrumentation--Radiation Detection Instruments-- Radiation Dosimeters
RADIOACTIVITY
THERMOLUMINESCENCE