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Organ and effective dose coefficients for cranial and caudal irradiation geometries: Neutrons

Journal Article · · Radiation Protection Dosimetry
DOI:https://doi.org/10.1093/rpd/ncw262· OSTI ID:1356889
 [1];  [2];  [3];  [4]
  1. Y-12 National Security Complex, Oak Ridge, TN (United States); Easterly Scientific, Knoxville, TN (United States)
  2. Easterly Scientific, Knoxville, TN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Georgia Inst. of Technology, Atlanta, GA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
+ Show Author Affiliations
Dose coefficients based on the recommendations of International Commission on Radiological Protection (ICRP) Publication 103 were reported in ICRP Publication 116, the revision of ICRP Publication 74 and ICRU Publication 57 for the six reference irradiation geometries: anterior–posterior, posterior–anterior, right and left lateral, rotational and isotropic. In this work, dose coefficients for neutron irradiation of the body with parallel beams directed upward from below the feet (caudal) and downward from above the head (cranial) using the ICRP 103 methodology were computed using the MCNP 6.1 radiation transport code. The dose coefficients were determined for neutrons ranging in energy from 10–9 MeV to 10 GeV. Here, at energies below about 500 MeV, the cranial and caudal dose coefficients are less than those for the six reference geometries reported in ICRP Publication 116.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
ORNL work for others; USDOE
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1356889
Alternate ID(s):
OSTI ID: 22641391
Journal Information:
Radiation Protection Dosimetry, Journal Name: Radiation Protection Dosimetry Journal Issue: 1 Vol. 175; ISSN 0144-8420
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English

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61 RADIATION PROTECTION AND DOSIMETRY