LaCl3(Ce) scintillation detector applications for environmental gamma-ray measurements of low to high dose rates
✍ Scribed by Masahiro Tsutsumi; Yoshihiko Tanimura
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 566 KB
- Volume
- 557
- Category
- Article
- ISSN
- 0168-9002
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✦ Synopsis
A new cerium-doped LaCl 3 (Ce) scintillator is evaluated with respect to the application in environmental gamma-ray dosimetry and spectrometry. The scintillator is very attractive for gamma-ray spectrometry in the case of high count rate, because it has excellent energy resolution and fast decay time. The performance characteristics of a scintillator with a 25.4 mm  25.4 mm LaCl 3 (Ce) crystal are studied and compared to those of a NaI(Tl) scintillator with the same size crystal. Acquired pulse height spectra are converted to dose rates by using the GðEÞ function method. Though the LaCl 3 (Ce) crystal itself produces a rather high background in the crystal itself, the scintillator provides good energy information and dose-rate readings from low to high-level (several mGy/h) by subtracting the selfbackground. The properties of LaCl 3 (Ce) scintillator suggest that the scintillator could be a promising candidate for monitoring at high dose levels as in emergencies, as well as at ordinary levels of background radiation.