EVAPORATION RESIDUES AT E-ASTERISK 400-MEV

被引：10

作者：

BEIERSDORF, S

ESTERLUND, RA

KNAACK, M

WESTMEIER, W

PATZELT, P

HESSBERGER, FP

NINOV, V

LUTTGEN, A

机构：

[1] GESELL SCHWERIONENFORSCH GMBH,W-6100 DARMSTADT,GERMANY

[2] GESELL KERNSPEKTROMETR MBH,W-3557 EBSDORFERGRUND,GERMANY

来源：

PHYSICS LETTERS B | 1992年 / 286卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(92)91766-3

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

For the reaction 11.4 MeV/u Kr-86 + Ru-104, which leads to the compound nucleus 190Hg* at an excitation energy of 396 MeV, we have measured a total evaporation-residue yield of 25 +/- 3 mb. As a pure Bohr-Wheeler fission-evaporation calculation for this system predicts sigma(ER) < 1 X 10(-4) mb, we postulate that the highly-excited compound nuclei here decay initially by particle emission only, due to dynamic hindrance of the fission process, thereby enhancing the evaporation-residue yield for this system by over five orders of magnitude.

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页码：225 / 228

页数：4

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