Title: Set-up and Calibration of a Triple Ionization Chamber System for Dosimetry in Mixed Neutron / Photon Fields
Authors: BECKER J.BRUNCKHORST E.ROCA ANTOANETASTECHER-RASMUSSEN FinnMOSS RAYMONDBOETTGER R.SCHMIDT Rainer
Citation: PHYSICS IN MEDICINE AND BIOLOGY vol. 52 p. 3715-3727
Publisher: IOP PUBLISHING LTD
Publication Year: 2007
JRC Publication N°: JRC38012
ISSN: 0031-9155
URI: http://stacks.iop.org/PMB/52/3715
http://publications.jrc.ec.europa.eu/repository/handle/JRC38012
DOI: 10.1088/0031-9155/52/13/004
Type: Articles in Journals
Abstract: The aim of this study is to introduce a triple ionization chamber system to separate dose components of mixed neutron/photon fields. Fast and thermal neutron dose components have a different biological effectiveness than gamma dose components. If boron neutron capture is used to enhance the dose in certain areas of a patient, the precise knowledge of the thermal neutron flux is essential. A tissue equivalent and two magnesium ionization chambers have been prepared for use in a triple chamber system for this purpose. One of the magnesium chambers is coated with 10B on the inside to enhance its response to thermal neutrons. All three chambers have been calibrated at a cobalt source, medical linear accelerators and several neutron sources. The chambers have been studied in Monte Carlo simulations and the results are compared with measurements
JRC Institute:Institute for Energy and Transport

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