Improvement of neutron detection efficiency with high sensitive CR-39 track detector

Citation
K. Oda et al., Improvement of neutron detection efficiency with high sensitive CR-39 track detector, RADIAT MEAS, 34(1-6), 2001, pp. 171-175
Citations number
12
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
RADIATION MEASUREMENTS
ISSN journal
1350-4487 → ACNP
Volume
34
Issue
1-6
Year of publication
2001
Pages
171 - 175
Database
ISI
SICI code
1350-4487(200106)34:1-6<171:IONDEW>2.0.ZU;2-B
Abstract
Two subjects have been studied for establishing an efficient detection tech nique applicable to neutrons with an energy higher than 20 MeV, for which p ersonnel dosimetry becomes more important especially in space activities an d radiation protection around high-energy accelerators. A performance of a new sensitive detector, recently developed copolymer of CR-39 and N-isopropylacrylamide, was checked in a D-T neutron field. It was confirmed experimentally that its sensitivity was several times as high as a pure CR-39 in the radiator effect and more than twice in the total effic iency. In the other experiment, CR-39 samples were exposed to 65 MeV quasi- monoenergetic neutrons, and the registration characteristics have been inve stigated from a fundamental point of view. The particles recorded were divi ded into three groups of proton relatives, alpha -particles and heavy ions by applying the growth curve method and the multi-step etching technique. T he measured fractions were in good agreement with the values calculated by SSNERS code previously developed. (C) 2001 Elsevier Science Ltd. All rights reserved.