Preequilibrium cluster emission in massive transfer reactions near the Coulomb barrier energy

被引：1

作者：

Feng, Zhao-Qing ^{[1
]}

机构：

[1] South China Univ Technol, Sch Phys & Optoelect, Guangzhou 510640, Peoples R China

来源：

PHYSICAL REVIEW C | 2023年 / 107卷 / 05期

关键词：

SUPERHEAVY NUCLEI; CROSS-SECTIONS; HEAVY; FUSION; DECAY;

D O I：

10.1103/PhysRevC.107.054613

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：

Within the framework of the dinuclear system model, the preequilibrium emission of neutron, proton, deuteron, triton, 3He, alpha, 6Li, 7Li, 8Be, and 9Be in the transfer reactions of 12C + 209Bi, 40,48Ca +238U, 238U +238U, and 238U +248Cm has been systematically investigated. The production rate, kinetic energy spectra, and emission angular distribution are calculated. It is found that the preequilibrium emission mechanism is associated with the reaction system and beam energy. The preequilibrium cross sections of proton, deuteron, triton, and alpha are comparable in magnitude. The reaction with 40Ca is favorable for the cluster emission in comparison with 48Ca on 238U at the near barrier energy. A broad angular distribution of the preequilibrium cluster is found in the heavy systems 238U +238U and 238U +248Cm. The method is also possible for the weakly bound nuclei induced reactions. Future experiments are discussed for the preequilibrium cluster measurements.

引用

页数：10

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