MCNP simulation and spectrum unfolding for an NaI monitor of radioactivity in aquatic systems

Spectrum unfolding can be implemented when the angular distribution of the radiation fluence is known, e.g. when the source–detector geometry is fixed. In the case of the system developed by Institut National des Radio-Elements (IRE) for monitoring radioactivity in aquatic systems, the source is an...

Full description

Saved in:
Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2007-09, Vol.580 (1), p.118-122
Main Authors: Mertens, C., De Lellis, C., Van Put, P., Tondeur, F.
Format: Article
Language:English
Subjects:
Gamma-ray monitor
MCNP
Simulation
Spectrum unfolding
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Spectrum unfolding can be implemented when the angular distribution of the radiation fluence is known, e.g. when the source–detector geometry is fixed. In the case of the system developed by Institut National des Radio-Elements (IRE) for monitoring radioactivity in aquatic systems, the source is an infinite homogenous medium surrounding the monitor, with constant density. Its response function for gamma rays is calculated with MCNP4.C2. The simulation model is validated with reference measurements of standard sources diluted in a drum. Results of unfolding with UMG 3.3 are presented for this situation, and for a measurement in sea water.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2007.05.049