Modeling the electric dipole strength of neutron-rich He8: Prediction of multineutron collective excitations

Myo, Takayuki; Katō, Kiyoshi

Physical Review C, 2022, 106(2), L021302

Permalink : https://hdl.handle.net/2115/87889

このアイテムのアクセス数:415件（2026-08-13 00:58 集計）

ファイル	フォーマット	サイズ	閲覧回数	説明
PhysRevC.106.L021302	pdf	535 KB	319

アクセス権	open access
URI	https://hdl.handle.net/2115/87889
タイトル	Modeling the electric dipole strength of neutron-rich He8: Prediction of multineutron collective excitations
著者	著者名 Myo, Takayuki
著者	e-Rad_Researcher 20109416 著者名 Katō, Kiyoshi
言語	英語
発行日	2022-08-02
出版者	American Physical Society (APS)
収録物名	Physical Review C
巻(号)	106(2)
ページ	L021302
抄録	We investigate the multineutron excitations of neutron-rich 8He in the electric dipole strength using a 4He+n + n + n + n five-body model. Many-body unbound states of 8He are obtained in the complex scaling method. We found that the different excitation modes coexist in the dipole strength below the excitation energy of 20 MeV. The strength below 10 MeV comes from the 7He+n channel, ndicating the sequential breakup of 8He via the 7He resonance to 6He+n + n. Above 10 MeV, the strength is obtained from many-body continuum states with strong configuration mixings, suggesting a new collective motion of four neutrons with the dipole oscillation against 4He.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	©2022 American Physical Society
PISSN	2469-9985
EISSN	2469-9993
NCID	AA00773613
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevC.106.L021302