Development of a new rectangular NaI(Tl) scintillator and spectroscopy of low-energy charged particles
- National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage-ku, Chiba 263-8555 (Japan)
- Hiroshima University, 1-4-1, Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527 (Japan)
Standard NaI(Tl) scintillators have only one optical window and are housed in airtight protective enclosures to protect against hygroscopicity from moisture in the air. For these reasons, NaI(Tl) scintillators are unsuitable for the collection of scintillation photons or for the detection of low-energy (<1 MeV) charged particles. To overcome these disadvantages, a rectangular NaI(Tl) scintillator has been newly developed. In this paper, we estimate the photon response of this new scintillator. The energy resolution was {Delta}E (Full Width at Half Maximum)=7.5{+-}0.2% for 662 keV gamma rays from a {sup 137}Cs standard source. The number of photoelectrons was 3,686 for the photoelectric peak. Good energy resolution and photon collection were therefore confirmed for this specialized form of NaI(Tl) scintillator. The ability of this scintillator to detect low-energy particles was confirmed by successful measurement of low-energy charged particles (250-700 keV region) from a {sup 137}Cs thin film radioisotope source.
- OSTI ID:
- 22053607
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 1 Vol. 81; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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