A new method for evaluating radon and thoron alpha-activities per unit volume inside and outside various natural material samples by calculating SSNTD detection efficiencies for the emitted alpha-particles and measuring the resulting track densities

Authors
Misdaq, MA Aitnouh, F Khajmi, H Ezzahery, H Berrazzouk, S
Citation
Ma. Misdaq et al., A new method for evaluating radon and thoron alpha-activities per unit volume inside and outside various natural material samples by calculating SSNTD detection efficiencies for the emitted alpha-particles and measuring the resulting track densities, APPL RAD IS, 55(2), 2001, pp. 205-213
Citations number
20
Categorie Soggetti
Multidisciplinary
Journal title
APPLIED RADIATION AND ISOTOPES
ISSN journal
09698043 → ACNP
Volume
55
Issue
2
Year of publication
2001
Pages
205 - 213
Database
ISI
SICI code
0969-8043(200108)55:2<205:ANMFER>2.0.ZU;2-0
Abstract
A Monte Carlo computer code for determining detection efficiencies of the C R-39 and LR-115 II solid-state nuclear track detectors (SSNTD) for alpha -p articles emitted by the uranium and thorium series inside different natural material samples was developed. The influence of the alpha -particle initi al energy on the SSNTD detection efficiencies was investigated. Radon (Rn-2 22) and thoron (Rn-220) alpha -activities per unit volume were evaluated in side and outside the natural material samples by exploiting data obtained f or the detection efficiencies of the SSNTD utilized for the emitted alpha - particles, and measuring the resulting track densities. Results obtained we re compared to those obtained by other methods. Radon emanation coefficient s have been determined for some of the considered material samples. (C) 200 1 Elsevier Science Ltd. All rights reserved.