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Molecule-like structure with covalent neutrons of F isotopes toward the neutron drip line

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Title: Molecule-like structure with covalent neutrons of F isotopes toward the neutron drip line
Authors: Kimura, M. Browse this author
Furutachi, N. Browse this author
Issue Date: Apr-2011
Publisher: American Physical Society
Journal Title: Physical Review C
Volume: 83
Issue: 4
Start Page: 044304
Publisher DOI: 10.1103/PhysRevC.83.044304
Abstract: The α-cluster structure of F isotopes has been studied based on antisymmetrized molecular dynamics. By using the constraint on the principal quantum number, various neutron configurations are investigated. It is found that a proton excitation into an sd shell does not necessarily induce α clustering in 21F and 23F. However, once one or two neutrons are excited into the pf shell together with a proton excitation, the core nuclei have α clustering. The calculation is extended toward the neutron drip line. The neutron-rich F isotopes also have α clustering in the excited states and their excitation energy greatly decreases toward the neutron drip line. The relation between the reduction of their excitation energies and the breaking of the neutron magic number N = 20 is suggested.
Rights: ©2011 American Physical Society
Type: article
Appears in Collections:創成研究機構 (Creative Research Institution) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 木村 真明

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