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Chinese Physics C> 2004, Vol. 28> Issue(5) : 451-454 

Observation of Light Particle Emission at Backward Angles in the Reaction Induced by 25MeV/u6He from9Be Target

  •  Department of Technical Physics and the DOE Key Laboratory of Heavy Ion Physics,Peking University, Beijing 100871,China2 RIKEN,2-1 Hirosawa,Wako,Saitama 351-0198,Japan

  • Light particle emission at around 107°and 128°in the reaction induced by 25MeV/u 6He from 9Be target were clearly observed. The shape of the energy spectra obtained is consistent with an equilibrium evaporation from a source with a temperature of 5.6MeV or 5.2MeV for complete fusion or for incomplete fusion, respectively. A large number of tritons were detected compared to the number of protons, which may be related to the widely studied exotic cluster structure and the isospin effect of 6He.
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    [1] . Hilscher D, Rossner H. Ann. Phys. , 1992, 17: 4712. Goldenbaum F et al. Phys. Rev. Lett. , 1999, 82: 50123. Cabrera J et al. Phys. Rev. , 2003, C68: 0346134. Penionzhkevich Y E et al. Eur. Phys. J. , 2002, A13: 1235. LIANG J F et al . Phy. Rev. Lett. , 2003, 91: 1527016. WU Y W, LIU Z H et al. Phys. Rev. , 2003, C68: 17. Thompson I J. Nucl. Phys. , 2002, A701: 7c8. Akimune H et al. Phys. Rev. , 2003, C67: 051302; Rusek K et al .Phys. Rev. , 2001, C64: 0446029. QIAN Xing et al. High Energy Phys. and Nucl. Phys. , 1996, 20: 304(in Chinese)(钱兴等.高能物理与核物理,1996, 20:304)10. Bhattacharya C, Basu S K et al. Phys. Rev. , 1991, C44: 1049

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ZHANG Gao-Long, YE Yan-Lin, JIANG Dong-Xing, ZHENG Tao, WANG Quan-Jin, LI Zhi-Huan, LI Xiang-Qing, CHEN Zhi-Qiang, HU Qing-Yuan, PANG Dan-Yang and WANG Jia. Observation of Light Particle Emission at Backward Angles in the Reaction Induced by 25MeV/u6He from9Be Target[J]. Chinese Physics C, 2004, 28(5): 451-454.
ZHANG Gao-Long, YE Yan-Lin, JIANG Dong-Xing, ZHENG Tao, WANG Quan-Jin, LI Zhi-Huan, LI Xiang-Qing, CHEN Zhi-Qiang, HU Qing-Yuan, PANG Dan-Yang and WANG Jia. Observation of Light Particle Emission at Backward Angles in the Reaction Induced by 25MeV/u6He from9Be Target[J]. Chinese Physics C, 2004, 28(5): 451-454. shu
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Received: 2003-12-05
Revised: 1900-01-01
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Observation of Light Particle Emission at Backward Angles in the Reaction Induced by 25MeV/u6He from9Be Target

    Corresponding author: YE Yan-Lin,
  • Department of Technical Physics and the DOE Key Laboratory of Heavy Ion Physics,Peking University, Beijing 100871,China2 RIKEN,2-1 Hirosawa,Wako,Saitama 351-0198,Japan
  • Received Date: 2003-12-05
  • Accepted Date: 1900-01-01
  • Available Online: 2004-05-05

Abstract: Light particle emission at around 107°and 128°in the reaction induced by 25MeV/u 6He from 9Be target were clearly observed. The shape of the energy spectra obtained is consistent with an equilibrium evaporation from a source with a temperature of 5.6MeV or 5.2MeV for complete fusion or for incomplete fusion, respectively. A large number of tritons were detected compared to the number of protons, which may be related to the widely studied exotic cluster structure and the isospin effect of 6He.

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