Ternary particle emission in spontaneous fission of 250Cf and 252Cf and in neutron induced fission of 249Cf and 251Cf

被引：15
|
作者：
Vermote, S. [1 ]
Wagemans, C. [1 ]
Serot, O. [2 ]
Heyse, J. [3 ,4 ]
Van Gils, J. [4 ]
Soldner, T. [5 ]
Geltenbort, P. [5 ]
AlMahamid, I. [6 ]
Tian, G. [7 ]
Rao, L. [7 ]
机构：
[1] Univ Ghent, Dept Phys & Astron, B-9000 Ghent, Belgium
[2] CEA Cadarache, DEN DER SPRC LEPh, F-13108 St Paul Les Durance, France
[3] SCK CEN, B-2400 Mol, Belgium
[4] EC JRC Inst Reference Mat & Measurements, B-2440 Geel, Belgium
[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[6] New York State Dept Hlth, Wadsworth Ctr, Albany, NY 12201 USA
[7] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA
来源：
NUCLEAR PHYSICS A | 2010年 / 837卷 / 3-4期
关键词：
NUCLEAR REACTIONS Cf-249; Cf-251(n; f); E=54 MeV; measured ternary alpha; triton and He-6 emission probabilities and energy distributions RADIOACTIVITY Cf-250 252(SF); triton and He-6 emission probabilities and energy distributions; ALPHA-EMISSION; TRITON;
D O I：
10.1016/j.nuclphysa.2010.03.001
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：
The emission probabilities and the energy distributions of tritons, alpha and He-6 particles emitted in the spontaneous ternary fission (zero excitation energy) of Cf-250 and in the cold neutron induced fission (excitation energy approximate to 6 5 MeV) of Cf-249 and Cf-251 are determined The particle identification was done with suited Delta E-E telescope detectors, at the IRMM (Geel, Belgium) for the spontaneous fission and at the ILL (Grenoble, France) for the neutron induced fission measurements. Hence particle emission characteristics of the fissioning systems Cf-250 and Cf-252 are obtained at zero and at bout 6 5 MeV excitation energies. While the triton emission probability is hardly influenced by the excitation energy, the He-4 and He-6 emission probability in spontaneous fission is higher than for induced fission This can be explained by the strong influence of the cluster preformation probability on the ternary particle emission probability
引用
收藏
页码：176 / 194
页数：19
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