dorsal/arxiv
View SchemaMultifragmentation vs. Evaporation vs. Binary-Decay in Fragment Production
| Authors | S. G. Mashnik, K. K. Gudima, M. I. Baznat |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0603046 |
| URL | https://arxiv.org/abs/nucl-th/0603046 |
Abstract
This paper presents part of an internal LANL Progress Report on completion of the "S" and "G" versions of the improved Cascade-Exciton Model (CEM03.01) and the Los Alamos Quark-Gluon String Model (LAQGSM.03.01) codes. The "S" versions consider fragmentation of compound nuclei produced after the preequilibrium stage of reactions for excitation energies above 2A MeV using the Statistical Multifragmentation Model (SMM) by Botvina et al. ("S" stands for SMM), while the "G" versions describe evaporation/fission stages of reactions using the fission-like binary-decay model GEMINI of Charity et al. ("G" stands for GEMINI) instead of using the the Generalized Evaporation Model GEM2 of Furihata incorporated into the standard versions of these codes. We present here an analysis of the recent 660 MeV p + 129I and 3.65 GeV p + 112Sn JINR measurements, of the new COSY data on 1.2 GeV p + (13 nuclei from Al to Th), of the 300 MeV and 1 GeV p + 56Fe data measured at GSI in inverse kinematics, and of the new GSI data on 1 GeV/nucleon 124Xe and 136Xe + Pb. To better understand the mechanisms of fragment production, we discuss several calculated but not-yet-measured kinematic characteristics of products of these reactions, which are predicted to be quite different by SMM, GEMINI, and GEM2. We find these kinematic quantities to be potentially useful in differentiating these reaction mechanisms if they can be measured in future experiments.
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"abstract": "This paper presents part of an internal LANL Progress Report on completion of\nthe \"S\" and \"G\" versions of the improved Cascade-Exciton Model (CEM03.01) and\nthe Los Alamos Quark-Gluon String Model (LAQGSM.03.01) codes. The \"S\" versions\nconsider fragmentation of compound nuclei produced after the preequilibrium\nstage of reactions for excitation energies above 2A MeV using the Statistical\nMultifragmentation Model (SMM) by Botvina et al. (\"S\" stands for SMM), while\nthe \"G\" versions describe evaporation/fission stages of reactions using the\nfission-like binary-decay model GEMINI of Charity et al. (\"G\" stands for\nGEMINI) instead of using the the Generalized Evaporation Model GEM2 of Furihata\nincorporated into the standard versions of these codes. We present here an\nanalysis of the recent 660 MeV p + 129I and 3.65 GeV p + 112Sn JINR\nmeasurements, of the new COSY data on 1.2 GeV p + (13 nuclei from Al to Th), of\nthe 300 MeV and 1 GeV p + 56Fe data measured at GSI in inverse kinematics, and\nof the new GSI data on 1 GeV/nucleon 124Xe and 136Xe + Pb. To better understand\nthe mechanisms of fragment production, we discuss several calculated but\nnot-yet-measured kinematic characteristics of products of these reactions,\nwhich are predicted to be quite different by SMM, GEMINI, and GEM2. We find\nthese kinematic quantities to be potentially useful in differentiating these\nreaction mechanisms if they can be measured in future experiments.",
"arxiv_id": "nucl-th/0603046",
"authors": [
"S. G. Mashnik",
"K. K. Gudima",
"M. I. Baznat"
],
"categories": [
"nucl-th",
"astro-ph",
"nucl-ex"
],
"title": "Multifragmentation vs. Evaporation vs. Binary-Decay in Fragment Production",
"url": "https://arxiv.org/abs/nucl-th/0603046"
},
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