Simulation of Cherenkov photons emitted in photomultiplier windows induced by Compton diffusion using the Monte Carlo code GEANT4

被引：17

作者：

Thiam, C. ^{[1
]}

Bobin, C. ^{[1
]}

Bouchard, J. ^{[1
]}

机构：

[1] CEA, LIST, LNE, LNHB, F-91191 Gif Sur Yvette, France

来源：

APPLIED RADIATION AND ISOTOPES | 2010年 / 68卷 / 7-8期

关键词：

TDCR method; Liquid scintillation counting; GEANT4; simulation; Cherenkov effect; BIALKALI PHOTOCATHODES; CERENKOV RADIATION; COINCIDENCE SYSTEM;

D O I：

10.1016/j.apradiso.2009.11.066

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The implementation of the TDCR method (Triple to Double Coincidence Ratio) is based on a liquid scintillation system which comprises three photomultipliers: at LNHB, this counter can also be used in the beta-channel of a 4 pi(beta)beta-gamma coincidence counting equipment It is generally considered that the gamma-sensitivity of the liquid scintillation detector comes from the interaction of the gamma-photons in the scintillation cocktail but when introducing solid gamma-ray emitting sources instead of the scintillation vial, light emitted by the surrounding of the counter is observed. The explanation proposed in this article is that this effect comes from the emission of Cherenkov photons induced by Compton diffusion in the photomultiplier windows In order to support this assertion, the creation and the propagation of Cherenkov photons inside the TDCR counter is simulated using the Monte Carlo code GEANT4. Stochastic calculations of double coincidences confirm the hypothesis of Cherenkov light produced in the photomultipher windows (C) 2009 Elsevier Ltd. All rights reserved

引用

页码：1515 / 1518

页数：4