Improved Intranuclear Cascade Models for the Codes CEM2k and LAQGSM

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

DOI:https://doi.org/10.1063/1.1945220· OSTI ID:20722393

Mashnik, S G; Sierk, A J; Prael, R E ^[1]; Gudima, K K ^[2]

---

1. Los Alamos National Laboratory, Los Alamos, NM 87545 (United States)
2. Institute of Applied Physics, Academy of Science of Moldova, Chisinau, MD-2028 (Moldova, Republic of)

An improved version of the Cascade-Exciton Model (CEM) of nuclear reactions implemented in the codes CEM2k and the Los Alamos version of the Quark-Gluon String Model (LAQGSM) has been developed recently at LANL to describe reactions induced by particles and nuclei at energies up to hundreds of GeV/nucleon for a number of applications. We present several improvements to the intranuclear cascade models used in CEM2k and LAQGSM developed recently to better describe the physics of nuclear reactions. First, we incorporate the photonuclear mode from CEM2k into LAQGSM to allow it to describe photonuclear reactions, not previously modeled there. Then, we develop new approximations to describe more accurately experimental elementary energy and angular distributions of secondary particles from hadron-hadron and photon-hadron interactions using available data and approximations published by other authors. Finally, to consider reactions involving very highly excited nuclei (E* {>=} 2 - 3 MeV/A), we have incorporated into CEM2k and LAQGSM the Statistical Multifragmentation Model (SMM), as a possible reaction mechanism occurring after the preequilibrium stage. A number of other refinements to our codes developed recently are also listed.

• OSTI ID: 20722393
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 769; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
C CODES
EXCITON MODEL
GEV RANGE
GLUONS
L CODES
MEV RANGE
NUCLEAR CASCADES
NUCLEAR FRAGMENTATION
NUCLEAR REACTION KINETICS
PHOTON-NUCLEON INTERACTIONS
PHOTONUCLEAR REACTIONS
QUARKS
STRING MODELS