First Experimental Evidence of the Neutron-proton Halo Structure in the Second Excited State of ~6Li

LI Zhi-hong, LIU Wei-ping, BAI Xi-xiang, LIAN Gang, LI Zhi-chang, ZENG Sheng(China Institute of Atomic Energy, P. O. Box 275-46, Beijing 102413, China)

doi:10.7538/yzk.2003.37.02.0097

LI Zhi-hong, LIU Wei-ping, BAI Xi-xiang, LIAN Gang, LI Zhi-chang, ZENG Sheng(China Institute of Atomic Energy, P. O. Box 275-46, Beijing 102413, China). First Experimental Evidence of the Neutron-proton Halo Structure in the Second Excited State of ~6Li[J]. Atomic Energy Science and Technology, 2003, 37(2): 97-97. DOI: 10.7538/yzk.2003.37.02.0097

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First Experimental Evidence of the Neutron-proton Halo Structure in the Second Excited State of ~6Li

LI Zhi-hong, LIU Wei-ping, BAI Xi-xiang, LIAN Gang, LI Zhi-chang, ZENG Sheng(China Institute of Atomic Energy, P. O. Box 275-46, Beijing 102413, China)

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The angular distributions for charge exchange reaction of 1H(6He, 6Li)n are measured in inverse kinematics with a secondary 6He beam at the energy of 4.17 A MeV producedbythesecondarybeamfacilityatHI13tandemaccelerator,Beijing.Thecomparison between experimental results and theoretical calculation indicates that both the ground state of 6He and the secondary excited state of 6Li have halo structure. The present work reveals the neutronproton halo structure in the secondary excited state of 6Li predicted by K. Arai et al for the first time.

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First Experimental Evidence of the Neutron-proton Halo Structure in the Second Excited State of ~6Li

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