Cluster Decay of the High-lying excited states in $^{14}$C

Authors :: Tian, Z. Y.
Ye, Y. L.
Li, Z. H.
Lin, C. J.
Li, Q. T.
Ge, Y. C.
Lou, J. L.
Jiang, W.
Li, J.
Yang, Z. H.
Feng, J.
Li, P. J.
Chen, J.
Liu, Q.
Zang, H. L.
Yang, B.
Zhang, Y.
Chen, Z. Q.
Liu, Y.
Sun, X. H.
Ma, J.
Jia, H. M.
Xu, X. X.
Yang, L.
Ma, N. R.
Sun, L. J.
Publication Year :: 2016
Abstract: A cluster-transfer experiment of $^9\rm{Be}(^9\rm{Be},^{14}\rm{C}\rightarrow\alpha+^{10}\rm{Be})\alpha$ at an incident energy of 45 MeV was carried out in order to investigate the molecular structure in high-lying resonant states in $^{14}$C. 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 $^{14}$C are reconstructed for three sets of well discriminated final states in $^{10}$Be. The results confirm the previous decay measurements with clearly improved decay-channel selections and show also 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 $^{10}$Be, indicating a well developed cluster structure in these high-lying states in $^{14}$C. Further measurements of more states of this kind are suggested.<br />Comment: To be published in Chinese Physics C; 4 pages, 3 figures

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