Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-12-14
Phys.Rev.C53:1824-1832,1996
Physics
Nuclear Physics
Nuclear Theory
22pages, Revex is used, 10 Postscript figures are available by request from chiba@hadron04.tokai.jaeri.go.jp
Scientific paper
10.1103/PhysRevC.53.1824
The preequilibrium (nucleon-in, nucleon-out) angular distributions of $^{27}$Al, $^{58}$Ni and $^{90}$Zr have been analyzed in the energy region from 90 to 200 MeV in terms of the Quantum Moleculear Dynamics (QMD) theory. First, we show that the present approach can reproduce the measured (p,xp') and (p,xn) angular distributions leading to continuous final states without adjusing any parameters. Second, we show the results of the detailed study of the preequilibrium reaction processes; the step-wise contribution to the angular distribution, comparison with the quantum-mechanical Feshbach-Kerman-Koonin theory, the effects of momentum distribution and surface refraction/reflection to the quasifree scattering. Finally, the present method was used to assess the importance of multiple preequilibrium particle emission as a function of projectile energy up to 1 GeV.
Chadwick Mark B.
Chiba Satoshi
Iwamoto Akira
Maruyama Tomoyuki
Maruyama Toshiki
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