Cluster decay of the high-lying excited states in 14C**Supported by the 973 Program of China (2013 CB834402) and National Natural Science Foundation of China (11275011, 11535004)

Zhuang Tian ,C J Lin,Q T Li,L J Sun,J Chen,P J Li,J Li,Y Liu,Y L Ye,X X Xu,Z Q Chen,H M Jia,Z H Li,J L Lou,Wei Jiang ,Z Yang ,Jinhui Feng ,Y Ge ,Lisheng Yang ,N R ,Jing Ma ,H L Zang,Q Liu,Xiaohui Sun ,Baodong Yang ,Y Zhang

doi:10.1088/1674-1137/40/11/111001

Zhuang Tian , C J Lin + Show 24 more

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https://doi.org/10.1088/1674-1137/40/11/111001

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Abstract

A cluster-transfer experiment of 9Be(9Be,14C → α+10Be)α at an incident energy of 45 MeV was carried out in order to investigate the molecular structure in high-lying resonant states in 14C. This reaction is of extremely large Q-value, making it an excellent case to select the reaction mechanism and the final states in outgoing nuclei. The high-lying resonances in 14C are reconstructed for three sets of well discriminated final states in 10Be. The results confirm the previous decay measurements with clearly improved decay-channel selections and also show a new state at 23.5(1) MeV. The resonant states at 22.4(3) and 24.0(3) MeV decay primarily into the typical molecular states at about 6 MeV in 10Be, indicating a well developed cluster structure in these high-lying states in 14C. Further measurements of more states of this kind are suggested.

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