NEUTRON REMOVAL IN PERIPHERAL RELATIVISTIC HEAVY-ION COLLISIONS

被引：40

作者：

AUMANN, T

BERTULANI, CA

SUMMERER, K

机构：

[1] GESELL SCHWERIONENFORSCH MBH, D-64291 DARMSTADT, GERMANY

[2] FED UNIV RIO DE JANEIRO, INST FIS, BR-21945970 RIO DE JANEIRO, BRAZIL

来源：

PHYSICAL REVIEW C | 1995年 / 51卷 / 01期

关键词：

D O I：

10.1103/PhysRevC.51.416

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We investigate the relativistic Coulomb fragmentation of Au197 by heavy ions, leading to one-, two-, and three-neutron removal. To resolve the ambiguity connected with the choice of a specific minimum impact parameter in a semiclassical calculation, a microscopic approach is developed based on nucleon-nucleon collisions (''soft-spheres'' model). This approach is compared with experimental data for Au197 at 1 GeV/nucleon and with a calculation using the ''sharp-cutoff'' approximation. We find that the harmonic-oscillator model predicting a Poisson distribution of the excitation probabilities of multiphonon states gives a good agreement with one-neutron removal cross sections but is unable to reach an equally good agreement with three-neutron removal cross sections. © 1995 The American Physical Society.

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页码：416 / 419

页数：4

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