A≈100和130核区手征双重带的描述

利用三轴形变的粒子 转子模型讨论了A≈100和A≈130核区手征双重带.基于粒子空穴组态πh11/2 νh-111/2的计算很好地再现了A≈130核区N=75同中子素的手征双重带实验能谱.通过分析基于组态πg9/2 νg-19/2的约化跃迁几率B(E2)和B(M1)研究A≈100核区可能的手征双重带. The Chiral doublets for nuclei in A≈100 and 130 regions have been studied with the particle-rotor model. The experimental spectra of chiral partner bands for four N=75 isotones in A≈region have been well reproduced by the calculation with the configuration πh_(11/2)νh~(-1)_(11/2). The possible chiral doublets in A≈100 region have been predicted by the particle-rotor model (PRM) with the configuration πg_(9/2) νg~(-1)_(9/2) based on the analysis of the B(M1) and B(E2) transition probabilities.     

辉石巨晶结构OH的分子光谱结晶学定向初探

利用分子光谱谱带位移、谱带强度、谱带形态等的变化,可以初步对晶体作结晶学定向。普通辉石结构OH红外光谱3组谱带值,垂直c轴方向相对于平行c轴的谱带各不相同：第一组谱带值,3 629～3 633 cm-1谱带红移到3 601～3 616 cm-1;第二组谱带值3 514～3 543 cm-1同样有红移现象;第三组3 460～3 465 cm-1的谱带值相反则有蓝移现象。相对强度上,两个方向上第一组的谱带强度相当;第二组、第三组谱带强度平行方向明显强于垂直方向。形态上则差别不大。拉曼谱垂直方向谱带强度普遍强于平行方向,谱带位置与形态基本不变。结构OH不同结晶方向的谱图性质可以反映一定的地质构造环境。     

相对论连续谱Hartree-Bogoliubov理论对滴线原子核结构的研究

回顾了相对论连续谱Hartree-Bogoliubov理论对奇特核结构的描述.包括对¹¹Li晕核的微观描述,并发现了其形成机制是由于Cooper对从1p_1/2轨道被散射到2s_1/2轨道;预言了滴线核的新现象——由6个中子组成的巨晕,给出了形成晕现象的条件为弱束缚与低离心位垒;解释了实际核中的赝自旋对称性;自旋轨道分裂与势能位垒弥散的关系;经典禁区内粒子对晕的影响;超重元素的结构研究等.     

BCK—代数理想（Ⅳ）

本文是作者［１］－［６］的继续，我们得到下述结果：定理４．设Ｉ是ＢＣＫ－代数Ｘ的一个理想，ａ是Ｘ的一个元素，则包含Ｉ和ａ的最小理想是对某个非负整数｝．定理１４．设Ｘ是一个Ｌｕｋａｓｉｅｗｉｃｚ代数，Ｉ是Ｘ的一个质理想．如果Ａ是Ｘ的一个真理想且，则Ａ也是质的．定理１５．Ｌｕｋａｓｉｅｗｉｃｚ代数Ｘ的零理想｛０｝是质的当且仅当＜Ｘ；≤＞是一个全序集．     

Proton magic even-even isotopes and giant halos of Ca isotopes with relativistic continuum Hartree-Bogoliubov theory

We study the proton magic O, Ca, Ni, Zr, Sn, and Pb isotope chains from the proton drip line to the neutron drip line with the relativistic continuum Hartree-Bogoliubov (RCHB) theory. Particulary, we study in detail the properties of even-even Ca isotopes due to the appearance of giant halos in neutron rich Ca nuclei near the neutron drip line. The RCHB theory is able to reproduce the experimental binding energiesE _b and two neutron separation energiesS _2n very well. The predicted neutron drip line nuclei are²⁸O,⁷²Ca,⁹⁸Ni,¹³⁶Zr,¹⁷⁶Sn, and²⁶⁶Pb. Halo and giant halo properties predicted in Ca isotopes withA>60 are investigated in detail through analysis of two neutron separation energies, nucleon density distributions, single particle energy levels, and the occupation probabilities of energy levels including continuum states. The spin-orbit splitting and the diffuseness of nuclear potential in these Ca isotopes, as well as the neighboring lighter isotopes in the drip line Ca region and find certain possibilities of giant halo nuclei in the Ne−Na−Mg drip line nuclei are also studied.     

正定关联BCI—代数

本文是作者［１］和［２］的继续，引入了正定关联ＢＣＩ－代数的概念，并证明了：正定关联ＧＢＣＫ－代数类和Ｐ－半单ＢＣＩ－代数类是正定关联ＢＣＩ－代数类的真子类。     

152Dy超变形转动带角动量的确定与能谱的计算

利用观测到的¹⁵²Dy超变形(SD)转动带内的19条γ射线能量以及转动谱的吴-曾公式,确切定出SD带内已测出的20条能级中最低能级的自旋为25h,而不是文献[1]中所建议的22h.这样,计算出的SD带能级与实验惊人地符合.与文献[1,2]不同,由此得出的动力学转动惯量J²     

Examining the Chiral Geometry in l04Rh and l06Rh

The criteria for chiral doublet bands based on one particle and one hole coupled to a triaxial rotor have been summarized. Two representative cases in A - 100 odd-odd nuclei, nearly degenerate △I = 1 doublet bands in 104Rh and 106Rh, are checked against these chiral criteria. It is shown that 106Rh possesses better chiral geometry than 104Rh, although the energy near degeneracy is achieved in 104Rh in comparison with the constant energy separation of doublet bands in 106Rh.