Photonuclear Reactions in FLUKA: Cross Sections and Interaction Models

Journal Article · Tue May 24 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1945245· OSTI ID:20722421

Fasso, Alberto ^[1]; Ferrari, Alfredo ^[2]; Sala, Paola R ^[3]

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1. SLAC, MS 48, 2575 Sand Hill Road, Menlo Park, CA 94025 (United States)
2. CERN, CH-1211 Geneva 23 (Switzerland)
3. ETH, CH-8093 Zurich (Switzerland)

Photonuclear reactions, implemented in FLUKA about ten years ago, have opened the way to a more accurate design of electron accelerator shielding. Since then, they have been introduced also in other codes: but the FLUKA design, covering all nuclei over the whole energy range, remains still unique. The FLUKA scheme is based on several physical models corresponding to different energy ranges but partially overlapping to ensure continuity. All models are smoothly integrated in the FLUKA hadronic event generator. Here we will mainly focus on the FLUKA Giant Resonance total cross-section database, which has been derived from experimental data or from existing evaluations for 190 nuclides. For all other nuclei, excitation functions are obtained from parameterizations or by interpolation. Many partial cross sections, not used explicitly in FLUKA, have also been evaluated in order to ensure consistency of the total cross sections entered into the database. The FLUKA implementation of photonuclear reactions has been successfully benchmarked with activation and neutron spectrometry experiments, and is being widely used to design shielding and to predict radiation damage.

• OSTI ID: 20722421
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 769; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
ELECTRONS
EXCITATION FUNCTIONS
F CODES
GIANT RESONANCE
INTERPOLATION
NEUTRON SPECTROSCOPY
PHOTON-NUCLEON INTERACTIONS
PHOTONUCLEAR REACTIONS
PHOTOPRODUCTION
SHIELDING