MONTE-CARLO MODELING OF NEUTRON DEPTH-DOSE DISTRIBUTIONS IN OPTIMIZING PROMPT GAMMA IN-VIVO NEUTRON-ACTIVATION ANALYSIS SYSTEMS

Authors
UTTERIDGE TD RALSTON AC WALLACE SA ALLEN BJ BEDDOE AH
Citation
Td. Utteridge et al., MONTE-CARLO MODELING OF NEUTRON DEPTH-DOSE DISTRIBUTIONS IN OPTIMIZING PROMPT GAMMA IN-VIVO NEUTRON-ACTIVATION ANALYSIS SYSTEMS, Applied radiation and isotopes, 45(7), 1994, pp. 789-794
Citations number
16
Categorie Soggetti
Nuclear Sciences & Tecnology","Radiology,Nuclear Medicine & Medical Imaging
Journal title
Applied radiation and isotopes
ISSN journal
09698043 → ACNP
Volume
45
Issue
7
Year of publication
1994
Pages
789 - 794
Database
ISI
SICI code
0969-8043(1994)45:7<789:MMONDD>2.0.ZU;2-R
Abstract
Optimization of prompt gamma in vivo neutron activation analysis syste ms is best achieved using Monte Carlo simulation. In this study the mo delling of the dimensions and materials for source holders and collima tors is described and compared with experimentally derived results whe re feasible. Results show that valid depth doses are obtained by model ling only the central part of an IVNAA system and that the use of bera ted paraffin as a reflector provides acceptable thermal fluence and de pth dose.