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Fluctuations in nuclear dynamics: Comparison of different methods

Abstract

We compare several methods for incorporating the effect of the fluctuating collision integral in Boltzmann-Uehling-Uhlenbeck simulations of nuclear dynamics: the method of correlated pseudo-particle collisions proposed by Bauer, Bertsch, and Das Gupta, the method of projection onto collective variables (specifically the local quadrupole moment of the momentum distribution) proposed by Ayik and Gregoire, and the method of direct simulation on a lattice in phase space recently proposed by Burgio, Chomaz, and Randrup. Considering a periodic two-dimensional nucleon gas in a constant one-body field, we examine the evolution of the fluctuations of the phase-space occupancy and their correlations. (orig.).
Authors:
Chapelle, F; Burgio, G F; Chomaz, P; Randrup, J [1] 
  1. Lawrence Berkeley Lab., CA (United States). Nuclear Science Div.
Publication Date:
Dec 01, 1991
Product Type:
Technical Report
Report Number:
GSI-91-64(prepr.)
Reference Number:
SCA: 663300; PA: DEN-92:005943; SN: 92000735954
Resource Relation:
Other Information: PBD: Dec 1991
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; NUCLEAR REACTION KINETICS; COMPUTERIZED SIMULATION; BOLTZMANN STATISTICS; COLLISION INTEGRALS; QUADRUPOLE MOMENTS; COLLECTIVE MODEL; LOCALITY; TWO-DIMENSIONAL CALCULATIONS; PHASE SPACE; FERMI GAS; FLUCTUATIONS; TRANSPORT THEORY; CORRELATIONS; FOKKER-PLANCK EQUATION; COMPARATIVE EVALUATIONS; 663300; NUCLEAR REACTIONS AND SCATTERING, GENERAL
OSTI ID:
10143329
Research Organizations:
Gesellschaft fuer Schwerionenforschung mbH, Darmstadt (Germany)
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
Other: ON: DE92516494; CNN: Contract DE-AC03-76SF00098; TRN: DE9205943
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
DEN
Size:
51 p.
Announcement Date:
Jul 05, 2005

Citation Formats

Chapelle, F, Burgio, G F, Chomaz, P, and Randrup, J. Fluctuations in nuclear dynamics: Comparison of different methods. Germany: N. p., 1991. Web.
Chapelle, F, Burgio, G F, Chomaz, P, & Randrup, J. Fluctuations in nuclear dynamics: Comparison of different methods. Germany.
Chapelle, F, Burgio, G F, Chomaz, P, and Randrup, J. 1991. "Fluctuations in nuclear dynamics: Comparison of different methods." Germany.
@misc{etde_10143329,
title = {Fluctuations in nuclear dynamics: Comparison of different methods}
author = {Chapelle, F, Burgio, G F, Chomaz, P, and Randrup, J}
abstractNote = {We compare several methods for incorporating the effect of the fluctuating collision integral in Boltzmann-Uehling-Uhlenbeck simulations of nuclear dynamics: the method of correlated pseudo-particle collisions proposed by Bauer, Bertsch, and Das Gupta, the method of projection onto collective variables (specifically the local quadrupole moment of the momentum distribution) proposed by Ayik and Gregoire, and the method of direct simulation on a lattice in phase space recently proposed by Burgio, Chomaz, and Randrup. Considering a periodic two-dimensional nucleon gas in a constant one-body field, we examine the evolution of the fluctuations of the phase-space occupancy and their correlations. (orig.).}
place = {Germany}
year = {1991}
month = {Dec}
}