New shell-model and mean-field calculations on unstable nuclei and their applications

2015 Fiscal Year Final Research Report

• Project/Area Number: 23244049
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: The University of Tokyo
• Principal Investigator: Otsuka Takaharu 東京大学, 理学(系)研究科(研究院), 教授 (20201379)
• Co-Investigator(Kenkyū-buntansha): SHIMIZU Noritaka 東京大学, 大学院理学系研究科, 准教授 (30419254)
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 不安定核 / エキゾチック核 / 殻模型 / 殻構造 / 殻進化 / 平均場模型 / 核廃棄物 / 二重ベータ崩壊

Outline of Final Research Achievements

We have carried out various nuclear structure calculations by means of shell-model and mean-field calculations. The effective nucleon-nucleon interaction has been derived from QCD through our own new method, which can be used to calculate various physical quantities. This enables us to study the structure of exotic nuclei, for instance, the island of inversion, from the first principle. The type II shell evolution theory has been developed for the description of shape coexistence.
Nuclear matrix elements of double-beta decay was calculated with two major shells for the case of Ca-48 with higher precision. The calculation of photo-excitation from the shell-model ground state has been made possible, which opens perspectives of providing basic data on nuclear transmutation for nuclear fission products (nuclear waste).

Free Research Field

原子核物理学理論