Three fission modes of 220Ra -: art. no. 041304

被引：30
作者：
Pokrovsky, IV [1 ]
Calabretta, L
Itkis, MG
Kondratiev, NA
Kozulin, EM
Maiolino, C
Prokhorova, EV
Rusanov, AY
Tretyakova, SP
机构：
[1] Joint Inst Nucl Res, Flerov Lab Nucl React, RU-141980 Dubna, Moscow Region, Russia
[2] Ist Nazl Fis Nucl, Lab Nazl Sud, I-95123 Catania, Italy
[3] Natl Nucl Ctr Kazakhstan, Inst Nucl Phys, Alma Ata 480082, Kazakhstan
来源：
PHYSICAL REVIEW C | 1999年 / 60卷 / 04期
关键词：
D O I：
10.1103/PhysRevC.60.041304
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-energy distributions of the Ra-220 fission fragments produced in the C-12+Pb-208 reaction at projectile energies higher and deep below the Coulomb barrier have been measured using a two-arm time-of-flight spectrometer CORSET. It has been shown that an asymmetric component appears at the sides of the prevailing symmetric fission with a cooling of the compound nucleus. The component consists of two standard modes with average masses of similar or equal to 132 and similar or equal to 139. A three-component structure has also been observed in the total kinetic energy distributions in the range of asymmetric fission fragment masses. [S0556-2813(99)50909-6].
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页数：4
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