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Radiopurity of a Ce...
Radiopurity of a CeBr3 crystal used as scintillation detector
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Lutter, G. (författare)
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Hult, M. (författare)
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- Billnert, Robert, 1981 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Oberstedt, Andreas, 1961 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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Oberstedt, S. (författare)
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Andreotti, E. (författare)
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Marissens, G. (författare)
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Rosengard, U. (författare)
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Tzika, F. (författare)
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(creator_code:org_t)
- Elsevier BV, 2013
- 2013
- Engelska.
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Ingår i: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. - : Elsevier BV. - 0168-9002. ; 703, s. 158-162
- Relaterad länk:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Cerium bromide (CeBr3) has recently been shown to exhibit several properties making it a suitable material as a scintillation detector in nuclear physics applications. The intrinsic activity of gamma-ray emitting radionuclides in a 38.1 mm x 38.1 mm (diameter x height) crystal of CeBr3 was investigated. The measurements were carried out in the HADES underground laboratory located 225 m underground. Two primordial radionuclides were detected; Ac-227 (and its daughters) with massic activity of 0.30 +/- 0.02 Bq/kg and La-138 with massic activity of 7.4 +/- 1.0 mBq/kg. Two activation products were also detected; Ce-139 and Br-82. Their massic activities (assuming a homogeneous distribution in the crystal) just before taking the CeBr3 crystal underground were 4.3 +/- 0.3 mBq/kg and 18 +/- 4 mBq/kg correspondingly. None of the other common primordial radionuclides (K-49, Ra-226, Ra-228, Th-228, and U-235) were detected and their detection limits were below 2 mBq/kg except for U-238 for which the upper limit was 135 mBq/kg and Pb-210 with an upper limit of 600 mBq/kg.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Scintillator
- HPGe-detector
- Underground laboratory
- CeBr3
- Gamma-ray spectrometry
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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