Skip Navigation


Radiation Protection Dosimetry Advance Access originally published online on December 16, 2007
Radiation Protection Dosimetry 2008 129(4):365-371; doi:10.1093/rpd/ncm484
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
129/4/365    most recent
ncm484v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Roca, A.
Right arrow Articles by Zamfir, N. V.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Roca, A.
Right arrow Articles by Zamfir, N. V.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Validating a MCNPX model of Mg(Ar) and TE(TE) ionisation chambers exposed to 60CO gamma rays

A. Roca1,2,*, V. A. Nievaart1, R. L. Moss1, F. Stecher-Rasmussen3 and N. V. Zamfir4

1 High Flux Reactor, Institute for Energy, Joint Research Centre, European Commission, PO Box 2, 1755ZG Petten, The Netherlands
2 Faculty of Physics, University of Bucharest, PO Box MG-11, RO-76900 Bucuresti-Magurele, Romania
3 NCT Physics, Alkmaar, The Netherlands
4 National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania

* Corresponding author: antoaneta.roca{at}jrc.nl

Received July 5, 2007, amended October 31, 2007, accepted November 7, 2007

For an accurate determination of the absorbed doses in complex radiation fields (e.g. mixed neutron-gamma fields), a better interpretation of the response of ionisation chambers is required. This study investigates a model of the ionisation chambers using a different approach, analysing the collected charge per minute as a response of the detector instead of the dose. The MCNPX Monte Carlo code is used. In this paper, the model is validated using a well-known irradiation field only: a 60Co source. The detailed MCNPX models of a Mg(Ar) and TE(TE) ionisation chamber is investigated comparing the measured charge per minute obtained free-in-air and in a water phantom with the simulated results. The difference between the calculations and the measurements for the TE(TE) chamber is within ±2% whereas for the Mg(Ar) chamber is around +7%. The systematic discrepancy in the case of Mg(Ar) chamber is expected to be caused by an overestimation of the sensitive volume.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.