Entrance channel dependence of quasifission in reactions forming 220Th

被引：91

作者：

Thomas, R. G. ^{[1
,2
]}

Hinde, D. J. ^{[1
]}

Duniec, D. ^{[1
]}

Zenke, F. ^{[1
]}

Dasgupta, M. ^{[1
]}

Brown, M. L. ^{[1
]}

Evers, M. ^{[1
]}

Gasques, L. R. ^{[1
]}

Rodriguez, M. D. ^{[1
]}

Diaz-Torres, A. ^{[1
]}

机构：

[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Dept Nucl Phys, Canberra, ACT 0200, Australia

[2] Bhabha Atom Res Ctr, Bombay 400085, Maharashtra, India

来源：

PHYSICAL REVIEW C | 2008年 / 77卷 / 03期

关键词：

D O I：

10.1103/PhysRevC.77.034610

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：

Mass-angle correlations of binary fragments produced in O-16+Pb-204, S-34+W-186, and Ti-48,Ti-50+Er-166,Er-170 reactions have been measured for a range of bombarding energies around their Coulomb barriers. At above-barrier energies, the width of the mass distributions for the fission-like fragments in the Ti-50+Er-170 reaction are found to be higher than those from the same compound system at similar excitation energies populated via the more mass asymmetric entrance channel reaction S-34+W-186, which in turn is higher than those for the O-16+Pb-204 system. The width of the mass distributions of the Ti + Er systems is found to increase with decreasing bombarding energies, in contrast with those of the O-16+Pb-204 and S-34+W-186 systems, which show a monotonic reduction in mass widths. This may be associated with the elongated contact configuration at sub-barrier energies.

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页数：9

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