RIBF Nuclear Physics Seminar
# Reaction cross sections as a probe of deformation and shell structures

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Asia/Tokyo

201 (RIBF Hall)
### 201

#### RIBF Hall

Description

=Date and Place=
Dec. 6th(Tues.) 13:30~ RIBF Hall(Room 201)
=Lecturer=
Dr.Shin Watanabe
(RIKEN, Strangeness Nuclear Physics Laboratory)
=Title=
Reaction cross sections as a probe of deformation and shell structures
=Abstract=
Thanks to the development of experimental techniques, total reaction cross sections (σR) have recently been used not only for nuclear radii but also for deformation and/or skin structures. In this seminar, I will introduce such a recent trend of σR from the theoretical points of view, and mainly focus on σR as a probe of deformation. As an example, we investigate 24-38Mg through the σR measured at Radioactive Ion Beam Factory in RIKEN. It is well known that Mg isotopes around N~20-22 belong to the so-called “island of inversion (IoI)” in which large deformation appears induced by intruder 2ℏω configurations. We therefore investigate deformation by using a microscopic framework based on optical potentials constructed by the double folding model and densities calculated by antisymmetrized molecular dynamics (AMD). Our results suggest that there exists large deformation beyond the IoI from N=19 (31Mg) to N=28 (40Mg).