Effects of fissioning nuclei distributions on fragment mass distributions for high energy fission

被引：4

作者：

Andrade, E., II ^{[1
]}

Menezes, J. C. M. ^{[2
]}

Duarte, S. B. ^{[3
]}

Garcia, F. ^{[2
]}

Rossi, P. C. R. ^{[4
]}

Tavares, O. A. P. ^{[3
]}

Deppman, A. ^{[1
]}

机构：

[1] Univ Sao Paulo IFUSP, Inst Fis, Rua Matao,Travessa R 187, BR-05508900 Sao Paulo, Brazil

[2] Univ Estadual Santa Cruz UESC, Dept Ciencias Exatas Technol, BR-45650000 Ilheus, Brazil

[3] CBPF, MCT, BR-22290180 Rio De Janeiro, Brazil

[4] IPEN, CNEN SP, Inst Pesquisas Energet, BR-05508900 Sao Paulo, Brazil

来源：

CNR*11 - THIRD INTERNATIONAL WORKSHOP ON COMPOUND NUCLEAR REACTIONS AND RELATED TOPICS | 2012年 / 21卷

关键词：

NEUTRON MULTIPLICITY; CASCADE; FRAME; CODE; F);

D O I：

10.1051/epjconf/20122110001

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 study the effects of fissioning nuclei mass- and energy-distributions on the formation of fragments for fission induced by high energy probes. A Monte Carlo code called CRISP was used for obtaining mass distributions and spectra of the fissioning nuclei for reactions induced by 660 MeV protons on Am-241 and on Np-239, by 500 MeV protons on Pb-208, and by Bremsstrahlung photons with end-point energies at 50 MeV and 3500 MeV on U-238. The results show that even at high excitation energies, asymmetric fission may still contribute significantly to the fission cross section of actinide nuclei, while it is the dominante mode in the case of lead. However, more precise data for high energy fission on actinide are necessary in order to allow definite conclusions.

引用

页数：9

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