JOURNAL ARTICLE

Evaluation of the neutron spectrum at flight altitude with Geant4 using different parameterizations.

  • Published In: Radiation Protection Dosimetry, 2023, v. 199, n. 15. P. 2035 1 of 3

  • Database: Applied Science & Technology Source Ultimate 2 of 3

  • Authored By: Pazianotto, Maurício T; Federico, Claudio A; Gonçalez, Odair L; Carlson, Brett V 3 of 3

Abstract

This article focuses on evaluating how different parameterizations of spallation reactions and atmospheric density profiles influence cosmic-ray-induced neutron spectra and ambient dose equivalent rates at ground level and flight altitude. Using Monte Carlo simulations with two versions of the Geant4 toolkit and the EXPACS code, the study compares neutron fluence rates and energies against experimental measurements from Brazil. Results indicate that variations in Geant4 versions and spallation models significantly affect neutron fluence and dose rates, with the Binary Cascade (BIC) model aligning better with ground-level data and the Bertini model performing better at flight altitude, while differences in atmospheric density profiles have minimal impact. The INCLXX spallation model showed the largest discrepancies compared to experimental and EXPACS data.

Additional Information

  • Source:Radiation Protection Dosimetry. 2023/10, Vol. 199, Issue 15, p2035
  • Document Type:Article
  • Subject Area:Earth and Atmospheric Sciences
  • Publication Date:2023
  • ISSN:01448420
  • DOI:10.1093/rpd/ncad039
  • Accession Number:172915491
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