Total Reaction Cross Sections in CEM and MCNP6 at Intermediate Energies

Abstract

Accurate total reaction cross section models are important to achieving reliable predictions from spallation and transport codes. The latest version of the Cascade Exciton Model (CEM) as incorporated in the code CEM03.03, and the Monte Carlo N-Particle transport code (MCNP6), both developed at Los Alamos National Laboratory (LANL), each use such cross sections. Having accurate total reaction cross section models in the intermediate energy region ($\sim$50 MeV to $\sim$5 GeV) is very important for different applications, including analysis of space environments, use in medical physics, and accelerator design, to name just a few. The current inverse cross sections used in the preequilibrium and evaporation stages of CEM are based on the Dostrovsky {\it et al.} model, published in 1959. Better cross section models are available now. Implementing better cross section models in CEM and MCNP6 should yield improved predictions for particle spectra and total production cross sections, among other results. Our current results indicate this is, in fact, the case.

13 pages, 15 figures, accepted for publication in Nuclear Instruments and Methods B

References in corpus (7)

• New potentialities of the Liège intranuclear cascade (INCL) model for reactions induced by nucleons and light charged particles
• Formula for proton-nucleus reaction cross section at intermediate energies and its application
• Competition of coalescence and "fireball" processes in nonequilibrium emission of light charged particles from p+Au collisions
• Isotopic Production Cross Sections in Proton-Nucleus Collisions at 200 MeV
• MCNP6 fragmentation of light nuclei at intermediate energies
• Complex Particle and Light Fragment Emission in the Cascade-Exciton Model of Nuclear Reactions
• Production of Heavy Clusters with an Expanded Coalescence Model in CEM

Cited by in corpus (8)

• Current status and desired accuracy of the isotopic production cross sections relevant to astrophysics of cosmic rays I. Li, Be, B, C, N
• FLUKA cross sections for cosmic-ray interactions with the DRAGON2 code
• The influence of nuclear models and Monte Carlo radiation transport codes on stray neutron dose estimations in proton therapy
• Production of Energetic Light Fragments in CEM, LAQGSM, and MCNP6
• Measurements and calculations of air activation in the NuMI neutrino production facility at Fermilab with the 120-GeV proton beam on target
• MCNP6 simulation of light and medium nuclei fragmentation at intermediate energies
• Production of Heavy Clusters with an Expanded Coalescence Model in CEM
• Cascade Models in Simulation of Extended Heavy Targets Irradiated by Accelerated Proton and Deuteron Beams