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Identification of prompt fission with lanthanum-chloride scintillation detectors

Andreas Oberstedt (Institutionen för fundamental fysik, Subatomär fysik) ; S. Oberstedt ; Robert Billnert (Institutionen för fundamental fysik, Subatomär fysik) ; W. Geerts ; F. -J. Hambsch ; J. Karlsson
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (0168-9002). Vol. 668 (2012), 0, p. 14--20.
[Artikel, refereegranskad vetenskaplig]

In this paper we demonstrate the employment of LaCl3:Ce scintillation detectors for the identification of prompt fission γ-rays from γ-radiation in contrast to other reactions. We present the properties of cylindrical 1.5 in.×1.5 in. detectors in terms of intrinsic activity, energy resolution, intrinsic full peak efficiency and intrinsic timing resolution. In addition, we show results from the measurement of γ-rays emitted in coincidence with the spontaneous fission of 252Cf, which lead us to the conclusion that the properties of the detectors used in this work, in particular the good timing resolution and a reasonably good energy resolution, are more than just sufficient for the assessment of prompt γ-heat in future nuclear reactors as requested by the OECD. Hence, in our opinion, LaCl3:Ce detectors, compared to those made out of LaBr3:Ce crystals, represent an appropriate and quasi low-cost choice for the above mentioned applications.

Nyckelord: Prompt fission γ- rays, Lanthanum chloride, Scintillation detector, Energy resolution, Timing resolution, 252Cf(sf)



Denna post skapades 2013-01-14. Senast ändrad 2013-10-29.
CPL Pubid: 170559

 

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Institutioner (Chalmers)

Institutionen för fundamental fysik, Subatomär fysik (2005-2013)

Ämnesområden

Fysik
Subatomär fysik
Kärnfysik
Acceleratorfysik och instrumentering

Chalmers infrastruktur