Quantum statistical correlations and single-particle distributions for slowly expanding systems with temperature profile

J. Helgesson, T. Csörgő, M. Asakawa, B. Lörstad

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

Competition among particle evaporation, temperature gradient, and flow is investigated in a phenomenological manner, based on a simultaneous analysis of quantum statistical correlations and momentum distributions for a nonrelativistic, spherically symmetric, three-dimensionally expanding, finite source. The parameters of the model emission function are constrained by fits to neutron and proton momentum distributions and correlation functions in intermediate-energy heavy-ion collisions. The temperature gradient is related to the momentum dependence of the radius parameters of the two-particle correlation function, as well as to the momentum-dependent temperature parameter of the single particle spectrum, while a long duration of particle evaporation is found to be responsible for the low relative momentum behavior of the two-particle correlations.

Original languageEnglish
Pages (from-to)2626-2635
Number of pages10
JournalPhysical Review C - Nuclear Physics
Volume56
Issue number5
Publication statusPublished - Nov 1997

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statistical correlation
temperature profiles
momentum
temperature gradients
evaporation
ionic collisions
distribution functions
neutrons
radii
protons

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics

Cite this

Quantum statistical correlations and single-particle distributions for slowly expanding systems with temperature profile. / Helgesson, J.; Csörgő, T.; Asakawa, M.; Lörstad, B.

In: Physical Review C - Nuclear Physics, Vol. 56, No. 5, 11.1997, p. 2626-2635.

Research output: Contribution to journalArticle

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