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Large enhancement of total reaction cross sections at the edge of the island of inversion in Ti, Cr, and Fe isotopes
Title: | Large enhancement of total reaction cross sections at the edge of the island of inversion in Ti, Cr, and Fe isotopes |
Authors: | Horiuchi, W. Browse this author →KAKEN DB | Inakura, T. Browse this author | Michimasa, S. Browse this author |
Issue Date: | 2022 |
Publisher: | American Physical Society (APS) |
Journal Title: | Physical Review C |
Volume: | 105 |
Issue: | 1 |
Start Page: | 14316 |
Publisher DOI: | 10.1103/PhysRevC.105.014316 |
Abstract: | A systematic analysis of nuclear deformation is made for neutron-rich Ti, Cr, and Fe isotopes to explore the nuclear structure in the island of inversion near N = 40, where strong nuclear deformation is predicted. The nuclear ground states are obtained by the Skyrme-Hartree-Fock method in three-dimensional coordinate space, which properly describes any nuclear shape. Three types of Skyrme interactions are employed to generate various deformed states in its isotopic chain. We find that in the island of inversion the occupation of highly elongated intruder orbits induces not only large quadrupole deformation but also large hexadecapole deformation. This appears as a sizable enhancement of the nuclear matter radius, showing the characteristic shell effect of the density profile near the nuclear surface. We show that the edge of the island of inversion, where the intruder orbit starts being occupied, can be determined by measuring the enhancement of the total reaction cross section at high incident energy. The possibility of constraining the hexadecapole deformation by a measurement of the total reaction cross sections is discussed. |
Rights: | ©2022 American Physical Society |
Type: | article |
URI: | http://hdl.handle.net/2115/84525 |
Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 堀内 渉
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