2024-03-29T12:28:42Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/714392022-11-17T02:08:08Zhdl_2115_20039hdl_2115_116Characteristic alpha and He-6 decays of linear-chain structures in C-16Baba, TomoyukiKimura, MasaakiAlpha decayHeavy-particle decaysNuclear structure & decaysNuclear physics420The linear-chain states of C-16 and their decay modes are theoretically investigated by using the antisymmetrized molecular dynamics. It is found that the positive-parity linear-chain states have the (3/2(pi)(-)) 2(1/2(sigma)(-))(2) configuration and primary decay to Be-12(2(1)(+)) as well as to Be-12(g.s.) by alpha-particle emission. Moreover, we show that they also decay via the He-6 + Be-10 channel. In the negative-parity states, it is found that two types of linear chains exist. One has the valence neutrons occupying the molecular orbits (3/2(pi)(-))(2)(1/2(sigma)(-))(3/2(pi)(+)), while the other's configuration cannot be explained in terms of the molecular orbits because of the strong parity mixing. Both configurations constitute the rotational bands with a large moment of inertia and intraband E2 transitions. Their alpha and He-6 reduced widths are sufficiently large to be distinguished from other noncluster states although they are smaller than those of the positive-parity linear chain.American Physical Society (APS)Journal Articleapplication/pdfhttp://hdl.handle.net/2115/71439https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/71439/1/PhysRevC.97.054315.pdf2469-9985Physical Review C9750543152018-05-14enginfo:doi/10.1103/PhysRevC.97.054315©2018 American Physical Societypublisher