Abstract
A transfer-reaction experiment of 9Be(9Be, 10Be)8Be was performed at a beam energy of 45 MeV. Excited states in 10Be up to 18.80 MeV are produced using missing mass and invariant mass methods. Most of the observed high-lying resonant states, reconstructed from the α + 6He and t + 7Li decay channels, agree with the previously reported results. In addition, two new resonances at 15.6 and 18.8 MeV are identified from the present measurement. The 18.55 MeV state is found to decay into both the t + 7Lig.s. and t + 7Li* (0.478 MeV) channels, with a relative branching ratio of 0.93 ± 0.33. Further theoretical investigations are encouraged to interpret this new information on cluster structure in neutron-rich light nuclei.
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Acknowledgments
This work was supported by the National Basic Research Program of China (Grant No. 2013CB834402), and the National Natural Science Foundation of China (Grant Nos. 11535004, 11275011, 11375017, and 11275001). The authors wish to thank the staff of the tandem accelerator laboratory at the China Institute of Atomic Energy (CIAE) for their excellent work in providing the beams.
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Jiang, W., Ye, Y., Li, Z. et al. High-lying excited states in 10Be from the 9Be(9Be,10Be)8Be reaction. Sci. China Phys. Mech. Astron. 60, 062011 (2017). https://doi.org/10.1007/s11433-017-9023-x
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DOI: https://doi.org/10.1007/s11433-017-9023-x