Fluence to effective dose conversion coefficients for neutrons: A comparison between results obtained by MCNP and FLUKA codes

M. Pelliccioni, M. Pillon

Research output: Contribution to journalArticle

3 Citations (Scopus)


Conversion coefficients from fluence to effective dose are calculated by radiation transport codes using mathematical models of the adult human, the so called anthropomorphic phantoms. A comparison using different codes is always important to discover limits and bugs in the computational methods of the codes. Two well-known radiation transport codes, MCNP and FLUKA, have been compared calculating the conversion coefficients from neutron fluence to effective dose using an identical model of an hermaphrodite phantom. Monoenergetic neutrons of energy ranging from 10 keV to 15 MeV plus Maxwellian distributed 0.025 eV neutrons were used with various irradiation geometries. The agreement is generally satisfactory in the energy range 10 keV-10 MeV, although differences as large as 20% can be observed for posterior-anterior irradiation. At thermal energy and at 15 MeV discrepancies up to 25% and 15% respectively, are found for all the irradiation geometries investigated. These results are discussed and some considerations about the various contributions of the radiation involved to the effective dose are exposed.
Original languageEnglish
Pages (from-to)261 - 266
Number of pages6
JournalRadiation Protection Dosimetry
Issue number4
Publication statusPublished - 1997
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Radiological and Ultrasound Technology
  • Radiation
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

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