The feasibility of boron containing phosphors in thermal neutron image plates, in particular the systems M2B5O9X : Eu2+ (M=Ca, Sr, Ba; X=Cl, Br). Part I: simulation of the energy deposition process

Autor:	Victor R. Bom, M.J. Knitel, V.P. Dotsenko, I.V. Berezovskaya, Pieter Dorenbos, C.W.E. van Eijk
Rok vydání:	2000
Předmět:	Physics Nuclear and High Energy Physics business.industry Monte Carlo method Analytical chemistry Phosphor Photoelectric effect Neutron temperature Detective quantum efficiency Optics Deposition (phase transition) Neutron Absorption (electromagnetic radiation) business Instrumentation
Zdroj:	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 449:578-594
ISSN:	0168-9002
DOI:	10.1016/s0168-9002(99)01474-6
Popis:	A thermal neutron image plate (IP) consisting of a mixture of BaFBr : Eu 2+ and Gd2O3 (IP-Gd) is compared with an alternative plate consisting of M 2 B 5 O 9 X : Eu 2+ ( M = Ca , Sr , Ba ; X = Cl,Br ) (IP-B). In particular, the Detective Quantum Efficiency (DQE) of both plates is considered. Monte Carlo simulations of the energy deposition process after the absorption of a neutron show that the variance of the energy deposition in the IP-Gd affects the DQE to a large extent. Because of this, the average number of photoelectrons detected per incident neutron, 〈Nphe〉, has to be only 1.3 for the haloborates to obtain an IP-B with a higher DQE value than the maximum possible with a IP-Gd.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::43328731f97b1dbbb19a7ee3d1e07f31 https://doi.org/10.1016/s0168-9002(99)01474-6 Zobrazit plný text záznamu Full Text from ScienceDirect