@article{oai:repo.qst.go.jp:00084767,
 author = {Inaba, K. and Sasamoto, Y. and Kawabata, T. and Fujiwara, M. and Funaki, Y. and Hatanaka, K. and Itoh, K. and Itoh, M. and Keigo, Kawase and Matsubara, H. and Maeda, Y. and Suda, K. and Sakaguchi, S. and Shimizu, Y. and Tamii, A. and Tameshige, Y. and Uchida, M. and Uesaka, T. and Yamada, T. and Keigo, Kawase},
 issue = {9},
 journal = {Progress in Theoretical and Experimental Physics},
 month = {Sep},
 note = {We searched for the α condensed state in 13C by measuring the α inelastic scattering at Eα = 388 MeV at forward angles including 0 degrees. We performed the distorted wave Born-approximation calculation with the single-folding potential and the multipole decomposition analysis to determine the isoscalar transition strengths in 13C. We found a bump structure around Ex = 12.5 MeV consisting of several 1/2− states, which were excited by the isoscalar monopole (IS0) transitions from the ground state. We proposed that this bump was due to the mirror state of the 13.5 MeV-state in 13N, which dominantly
decayed to the α condensed state in 12C. Although this bump was speculated
to be a candidate for the α condensed state, the OCM calculation suggested that the α condensed state is unlikely to emerge as the negative parity states. We also found two 1/2+ or 3/2+ states at Ex = 14.5 and 16.1 MeV excited by the isoscalar dipole (IS1) transitions. We compared the experimental level diagram and the IS0 and IS1 transitions strengths with those predicted by shell-model and cluster-model calculations. We suggested that the 16.1-MeV state is a possible candidate for the α condensed state predicted by the cluster-model calculations. However, the theoretical IS1 transition strength for this state is significantly smaller than the measured value. Further experimental information is strongly desired to establish the α condensed state in 13C.},
 title = {Search for α condensed states in 13C using α inelastic scattering},
 volume = {2021},
 year = {2021}
}