Observation of $^{6}$He+$t$ cluster states in $^{9}$Li
Abstract
He+ cluster states of exited Li have been measured by 32.7 MeV/nucleon Li beams bombarding on Pb target. Two resonant states are clearly observed with the excitation energies at 9.8 MeV and 12.6 MeV and spin-parity of 3/2 and 7/2 respectively. These two states are considered to be members of K=1/2 band. The spin-parity of them are identified by the method of angular correlation analysis and verified by the continuum discretized coupled channels (CDCC) calculation, which agrees with the prediction of the generator coordinate method (GCM). A monopole matrix element about 4 fm for the 3/2 state is extracted from the distorted wave Born approximation (DWBA) calculation. These results strongly support the feature of clustering structure of two neutron-rich clusters in the neutron-rich nucleus Li for the first time.
Keywords
Cite
@article{arxiv.1709.02515,
title = {Observation of $^{6}$He+$t$ cluster states in $^{9}$Li},
author = {W. H. Ma and J. S. Wang and D. Patel and Y. Y. Yang and J. B. Ma and S. L. Jin and P. Ma and Q. Hu and Z. Bai and M. R. Huang and X. Q. Liu and Y. J. Zhou and J. Chen and Z. H. Gao and Q. Wang and J. Lubian and J. X. Li and T. F. Wang and S. Mukherjee and X. Y. Ju and Y. S. Yu and T. W. Wu and C. Ni and X. D. Jia and Q. B. Liu and Y. H. Zhang and H. S. Xu and G. Q. Xiao},
journal= {arXiv preprint arXiv:1709.02515},
year = {2021}
}