Degrees of freedom in antisymmetrized molecular dynamics and (p,p) reactions in the region

Andreas Engel, Eiji I. Tanaka, Tomoyuki Maruyama, Akira Ono, Hisashi Horiuchi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

degrees of freedom are introduced into antisymmetrized molecular dynamics (AMD). This is done by increasing the number of basic states in the AMD wave function, introducing a Skyrme-type delta-nucleon potential, and including NNN reactions in the collision description. As a test of the delta dynamics, the extended AMD is applied to (p,p) reactions at Elab=800 MeV for a C12 target. It is found that the ratio and the absolute values for delta peak and quasielastic peak (QEP) in the C12(p,p) reaction are reproduced for angles lab40°. For forward angles the QEP is overestimated, but generally the agreement between AMD calculations and experimental data is reasonable. The results of the AMD calculations are compared to one-step Monte Carlo (OSMC) calculations and a detailed analysis of multi-step and delta potential effects is given. Along this analysis a decomposition of the cross section into various reaction channels is presented and the reaction dynamics is discussed in detail. As important side results we present a way to apply a Galilei invariant theory for (N,N) reactions up to Elab800 MeV which ensures approximate Lorentz invariance and we discuss how to fix the width parameter of the single particle momentum distribution for outgoing nucleons in the AMD calculation.

Original languageEnglish
Pages (from-to)3231-3248
Number of pages18
JournalPhysical Review C
Volume52
Issue number6
DOIs
Publication statusPublished - 1995 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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