α Fragment Emission in 25MeV/u <SUP>6</SUP>He+<SUP>9</SUP>Be Break-up Reaction

LI Zhi-Huan; YE Yan-Lin; CHEN Tao; JIANG Dong-Xing; HUA Hui; LI Xiang-Qing; WANG Quan-Jin; GE Yu-Cheng; PANG Dan-Yang; DI Zhen-Yu; JIN Gen-Ming; XIAO Guo-Qing; GUO Zhon

Chinese Physics C> 2003, Vol. 27> Issue(3) : 206-210

α Fragment Emission in 25MeV/u ⁶He+⁹Be Break-up Reaction

Department of Technical Physics, School of Physics, Peking University, Beijing 100871, China2 Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

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Abstract：
Energy and angular distributions of α fragments produced in 25Mev/u ⁶He+⁹Be break-up reaction were measured. We calculated double differential cross section and angle distribution of ⁴He fragment for ⁶He breakup reaction in terms of direct process theory including nuclear diffraction dissociation and stripping process based on Serber model. The influence of the diffraction dissociation and abrasion process to the break-up reaction is investigated by the Serber model. The theoretical analysis indicates that the large breakup cross section of ⁶He comes mainly from the low two-neutron separation energy, but the difference of radius size between ⁶He and ⁶Li has small influence on the results.

References

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LI Zhi-Huan, YE Yan-Lin, CHEN Tao, JIANG Dong-Xing, HUA Hui, LI Xiang-Qing, WANG Quan-Jin, GE Yu-Cheng, PANG Dan-Yang, DI Zhen-Yu, JIN Gen-Ming, XIAO Guo-Qing, GUO Zhon, α Fragment Emission in 25MeV/u ⁶He+⁹Be Break-up Reaction[J]. Chinese Physics C, 2003, 27(3): 206-210.

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Received: 2002-02-20
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

α Fragment Emission in 25MeV/u ⁶He+⁹Be Break-up Reaction

Corresponding author: LI Zhi-Huan,

Department of Technical Physics, School of Physics, Peking University, Beijing 100871, China2 Institute of Modern Physics, The Chinese Academy of Sciences, Lanzhou 730000, China

Received Date: 2002-02-20
Accepted Date: 1900-01-01
Available Online: 2003-03-05

Abstract: Energy and angular distributions of α fragments produced in 25Mev/u ⁶He+⁹Be break-up reaction were measured. We calculated double differential cross section and angle distribution of ⁴He fragment for ⁶He breakup reaction in terms of direct process theory including nuclear diffraction dissociation and stripping process based on Serber model. The influence of the diffraction dissociation and abrasion process to the break-up reaction is investigated by the Serber model. The theoretical analysis indicates that the large breakup cross section of ⁶He comes mainly from the low two-neutron separation energy, but the difference of radius size between ⁶He and ⁶Li has small influence on the results.