title: ORGAN AND EFFECTIVE DOSE COEFFICIENTS FOR CRANIAL AND CAUDAL IRRADIATION GEOMETRIES: NEUTRONS.
abstract: 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. 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.
authors: Y-12 National Security Complex, P.O. Box 2009, M.S. 8206, Oak Ridge, TN 37831-8206, USA.|Easterly Scientific, 6412 Westminster Road, Knoxville, TN 37919, USA.
authors: K G
authors: KG
authors: Veinot
authors: Easterly Scientific, 6412 Westminster Road, Knoxville, TN 37919, USA.
authors: K F
authors: KF
authors: Eckerman
authors: Center for Radiation Protection Knowledge, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.|Georgia Institute of Technology, Atlanta, GA 30332-0745, USA.
authors: N E
authors: NE
authors: Hertel
authors: Center for Radiation Protection Knowledge, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
authors: M M
authors: MM
authors: Hiller
mesh_terms: D003198:Computer Simulation; D006801:Humans; D009010:Monte Carlo Method; D009502:Neutrons; D019047:Phantoms, Imaging; D011829:Radiation Dosage; D011835:Radiation Protection; D011874:Radiometry