2016/09/06 by Yuta Yoshida, Yoshida, Yuta, Yoshiko Kanada-En’yo +1
Physics and Astronomy · #Nuclear physics research studies #Superconductivity in MgB2 and Alloys #Atomic and Molecular Physics
paper · pdf · doi:10.48550/arxiv.1609.01407
3α-cluster structures and monopole transitions of 0+ states in 12C and 14C were investigated with 3α- and 10Be+α-cluster models. A gas-like 3α state and a bending-chain 3α state were obtained in the 0+2 and 0+3 states of 12C, respectively. In 14C, a linear-chain 3α structure is found in the 0+4 state near the 10Be+α threshold, but a cluster gas-like state does not appear because valence neutrons attract α clusters and suppress spatial development of 3α clustering. It was found that the linear-chain state in 14C is stabilized against the bending and α escaping modes by valence neutrons. The monopole transition strengths in 12C are enhanced by 3α-cluster developing, whereas, those in 14C are not enhanced so much because of the tight binding of α clusters by valence neutrons.