Observations on the background spectra of four LaCl3(Ce) scintillation detectors

Our laboratory has over the course of the last year purchased four LaCl3(Ce)scintillation rystals for evaluation as part of an environmental management research and development project. In addition to the expected content of naturally radioactive 138La, we have found that all four of these detectors...

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Bibliographic Details
Published in:Applied radiation and isotopes 2005-08, Vol.63 (2), p.223-228
Main Authors: Hartwell, J.K., Gehrke, R.J.
Format: Article
Language:English
Subjects:
alpha particle
ALPHA PARTICLES
DETECTION
ENVIRONMENTAL SCIENCES
EVALUATION
ISOTOPES
LaCl3(Ce) scintillation crystals
MANAGEMENT
nuclides
RADIOISOTOPES
radionuclides
SCINTILLATION COUNTERS
SCINTILLATIONS
SENSITIVITY
SPECTRA
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Summary:Our laboratory has over the course of the last year purchased four LaCl3(Ce)scintillation rystals for evaluation as part of an environmental management research and development project. In addition to the expected content of naturally radioactive 138La, we have found that all four of these detectors are contaminated to various degrees with alpha particle emitting nuclides that we have determined to be 227Ac and its daughters. The impact of these radionuclides on the background spectra, and thus on the detection sensitivity, of these detectors is presented and discussed.
ISSN:0969-8043
1872-9800
DOI:10.1016/j.apradiso.2005.02.009