An energy-dependent numerical model for the condensation probability, γ j

Journal Article · Fri Dec 09 00:00:00 EST 2016 · Computer Physics Communications

DOI:https://doi.org/10.1016/j.cpc.2016.11.006· OSTI ID:1337085

Kerby, Leslie Marie  ^[1]

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1. Idaho State University, Pocatello, ID (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

The “condensation” probability, γ_j, is an important variable in the preequilibrium stage of nuclear spallation reactions. It represents the probability that p_j excited nucleons (excitons) will “condense” to form complex particle type j in the excited residual nucleus. In addition, it has a significant impact on the emission width, or probability of emitting fragment type j from the residual nucleus. Previous formulations for γ_j were energy-independent and valid for fragments up to ⁴He only. This paper explores the formulation of a new model for γ_j, one which is energy-dependent and valid for up to ²⁸Mg, and which provides improved fits compared to experimental fragment spectra.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC52-06NA25396
• OSTI ID: 1337085
• Alternate ID(s): OSTI ID: 1419520
• Report Number(s): LA-UR-15-26648
• Journal Information: Computer Physics Communications, Journal Name: Computer Physics Communications; ISSN 0010-4655
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
97 MATHEMATICS AND COMPUTING
Atomic and Nuclear Physics