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A comparison of total reaction cross section models used in FLUKA, GEANT4 and PHITS
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Applied Nuclear Physics. (Nuclear reaction group)
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2012 (English)In: Aerospace Conference, 2012 IEEE, 2012, 1-10 p.Conference paper (Refereed)
Abstract [en]

Understanding the interactions and propagations of high energy protons and heavy ions are essential when trying to estimate the biological effects of Galactic Cosmic Rays (GCR) and Solar Particle Events (SPE) on personnel on interplanetary missions, and when preparing the construction of a lunar base. To be able to calculate the secondary particles, including neutrons, and to estimate shielding properties of different materials and radiation risks inside complex geometries, particle and heavy ion transport codes are needed. The interactions of the GCR and SPE with matter include many complex properties and many factors influence the calculated results. In all particle and heavy ion transport codes, the probability function that a projectile particle will collide with a nucleus within a certain distance x in the matter depends on the total reaction cross sections, which also scale the calculated partial fragmentation cross sections. It is therefore crucial that accurate total reaction cross section models are used in the transport calculations. FLUKA, GEANT4 and PHITS are three major multi-purpose three-dimensional Monte Carlo particle and heavy ion transport codes widely used for fundamental research, radioprotection, radiotherapy, and space dosimetry. In this paper, a systematic comparison of the total reaction cross section models used as default in these three codes is performed for a variety of systems of importance for space dosimetry, and the need for future improvements and benchmarking against experimental results is discussed. The need for benchmarking and improvements of the partial nuclear reaction and evaporation models, as well as how impact parameter functions, switching time between the dynamical/pre-equilibrium and the de-excitation/evaporation stages, low energy data libraries, etc., influence the final results, is also briefly be discussed.

Place, publisher, year, edition, pages
2012. 1-10 p.
Keyword [en]
Moon;aerospace biophysics;biological effects of ionising particles;cosmic rays;dosimetry;FLUKA;GEANT4;PHITS;biological effect;fundamental research;galactic cosmic ray;heavy ion transport code;heavy ions;high energy protons;interplanetary missions;lunar base;multipurpose 3D Monte Carlo code;partial fragmentation cross section;personnel;radiation risk;radioprotection;radiotherapy;solar particle events;space dosimetry;total reaction cross section model;Data models;Educational institutions;Extraterrestrial measurements;Ions;Projectiles;Protons;Switches
National Category
Subatomic Physics
Research subject
Nuclear Physics
URN: urn:nbn:se:uu:diva-218504DOI: 10.1109/AERO.2012.6187014OAI: oai:DiVA.org:uu-218504DiVA: diva2:695787
Aerospace Conference;(2012 IEEE); 3-10 March 2012; Big Sky, MT, USA
Available from: 2014-02-12 Created: 2014-02-12 Last updated: 2014-02-20Bibliographically approved

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Lantz, Mattias
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Applied Nuclear Physics
Subatomic Physics

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