Comparison of neutron organ and effective dose coefficients for PIMAL stylized phantom in bent postures in standard irradiation geometries

Radiation and Environmental Biophysics
Kathryn BalesE Sanchez

Abstract

Neutron dose coefficients for standard irradiation geometries have been reported in International Commission on Radiological Protection (ICRP) Publication 116 for the ICRP Publication 110 adult reference phantoms. In the present work, organ and effective dose coefficients have been calculated for a receptor in both upright and articulated (bent) postures representing more realistic working postures exposed to a mono-energetic neutron radiation field. This work builds upon prior work by Dewji and co-workers comparing upright and bent postures for exposure to mono-energetic photon fields. Simulations were conducted using the Oak Ridge National Laboratory's articulated stylized adult phantom, "Phantom wIth Moving Arms and Legs" (PIMAL) software package, and the Monte Carlo N-Particle (MCNP) version 6.1.1 radiation transport code. Organ doses were compared for the upright and bent (45° and 90°) phantom postures for neutron energies ranging from 1 × 10- 9 to 20 MeV for the ICRP Publication 116 external exposure geometries-antero-posterior (AP), postero-anterior (PA), and left and right lateral (LLAT, RLAT). Using both male and female phantoms, effective dose coefficients were computed using ICRP Publication 103 methodology. The resu...Continue Reading

References

Apr 1, 2010·Annals of the ICRP·N Petoussi-HenssUNKNOWN International Commission on Radiation Units and Measurements
Dec 17, 2014·Journal of Radiological Protection : Official Journal of the Society for Radiological Protection·Eun Young HanChoonsik Lee
Feb 2, 2016·The British Journal of Radiology·Stephen G BarnardSimon Bouffler
Feb 17, 2017·Radiation Protection Dosimetry·Mauritius Hiller, Shaheen Azim Dewji

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