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国家自然科学基金(10675170)

作品数:6 被引量:6H指数:2
相关作者:邹文华顾建中曹天光更多>>
相关机构:中国原子能科学研究院更多>>
发文基金:国家自然科学基金国家重点基础研究发展计划更多>>
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Magnetic rotation in Rubidium-84
2013年
High-spin states in 84 Rb have been studied by using the 70Zn(18O, p3n)84Rb reaction at beam energy of 75MeV. Three regular magnetic dipole bands including strong M1 and weak E2 transitions have been observed in this nucleus which shows the characteristic feature of magnetic rotation. These bands are interpreted in the projected shell model for the first time on the basis of the four-quasiparticle configuration of the type π(fp)π(g29/2)v(g9/2). It is shown that the calculated sequence lies roughly in the same energy range as the experimental one but the interval between neighboring levels is larger than the corresponding experimental value. We believe that a 4-quasiparticle band crossing with the 2-quasiparticle band will depress the energies of the states.
SHEN ShuifaHAN GuangbingWEN ShuxianYAN YupengWU XiaoguangZHU LihuaHE ChuangyeLI Guangsheng
关键词:投影壳模型高自旋态磁偶极子E2跃迁
SPECIAL TOPICS:Study of the high spin states in stable nucleus ^(84)Sr被引量:3
2010年
The School of Nuclear Engineering and Technology at the East China Institute of Technology cooperated with the China Institute of Atomic Energy to investigate the high spin states of 84Sr. The study is reported in Volume 53 (October, 2010) of the SCIENCE
KANG XuZhong SHEN ShuiFa
关键词:高自旋态稳定核核工程原子能
国内外低能核理论的发展历史、现状和走势
2009年
大型核物理实验装置的问世和实验技术的进步,为核理论研究提供了越来越丰富的实验数据,检验着现有的理论,也为理论研究提出了新的课题,因而拓宽着核理论的研究领域。现代大型超级计算机的运算能力和运算速度的迅速提高以及数值计算方法的不断改进极大地提高了核多体计算的精确程度。核理论研究已进入了一个前所未有的迅速发展时期。本文就低能核理论的研究现状、国内近期主要研究进展和将来的发展趋势作简要分析和概述,并对核理论研究工作的今后发展提出了建议。
顾建中彭帮保邹文华曹天光
关键词:核结构核反应
Application of the SCC method to the multi-O(4) model:The collective Hamiltonian被引量:2
2009年
The collective Hamiltonian up to the fourth order for a multi-O(4) model is derived for the first time based on the self-consistent collective-coordinate(SCC) method,which is formulated in the framework of the time-dependent Hartree-Bogoliubov(TDHB) theory.This collective Hamiltonian is valid for the spherical case where the HB equilibrium point of the multi-O(4) model is spherical as well as for the deformed case where the HB equilibrium points are deformed.Its validity is tested numerically in both the spherical and deformed cases.Numerical simulations indicate that the low-lying states of the collective Hamiltonian and the transition amplitudes among them mimic fairly well those obtained by exactly diagonalizing the Hamiltonian of the multi-O(4) model.The numerical results for the deformed case imply that the "optimized RPA boundary condition" is also valid for the well-known η*,η expansion around the unstable HB point of the multi-O(4) model.All these illuminate the power of the SCC method.
KOBAYASI Masato
关键词:METHODMODELCOLLECTIVEHAMILTONIAN
Nuclear structure around ^(80)Zr
2010年
Recent years have witnessed intense activity concerning the study of nuclei with equal numbers of neutrons and protons (N = Z). Exotic properties have been exhibited in the N = Z nuclei, especially in those with atomic masses around 80. In the present paper, the projected shell model(PSM)together with a relativistic Hartree-Bogoliubov (RHB) theory is used to study the nuclear structure near the N = Z line in the mass A ≈ 80 region. For three Zr isotopes 80,82,84Zr, the projected potential energy surfaces and ground state bands are calculated. It is shown that shape coexistence occurs in all of these nuclei. Moreover, we find that the residual neutron-proton interaction strongly affects the ground state band of 80Zr; however, it slightly modifies those of 82Zr and 84Zr.
邹文华田源沈水法顾建中彭帮保张地大马中玉
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