High Spin Structures of Odd-Odd Nucleus ^106Ag

Chirality is recently observed in high spin states of triaxial nuclei. It is a new symmetry introduced to nuclear rotation. It has been suggested that chiral twin bands might be observed in the A-130, A-100 and A-180 transitional region . The first experimental evidence for chirality structures,     

Parity violation and neutrion mass

Besides the fact of parity violation in weak interactions,based on evidences from neutrino oscillation and tritium beta decay,a natural conjecture is that neutrinos may be spacelike particles with a tiny proper mass.A Dirac-type equation for spacelike neutrinos is further investigated and its solutions are discussed.This equation can be written in two spinor equations coupled together via nonzero proper mass while respecting maximum parity violation.     

Reflection Asymmetric Shell Model Description of Neutron-Rich ^142Ba Nucleus

The reflection asymmetric shell model （RASM） has been developed to describe the octupole deformed odd nuclei. With the RASM the calculated rotational bands have good angular momentum and good parity and then can be directly compared with the experimental rotational bands. In this report, we have applied this model to describe the octupole deformed bands of the neutron-rich even-even nucleus ^142Ba. The quarupole-, octupole- and hexadecapole- deformation parameters used in this work are 0.127,     

5 反射不对称壳模型对^142Ba的描述

反射不对称壳模型（RASM）是用来描述八极形变原子核的模型。该理论计算的转动带具有好的角动量和宇称，因此可以与实验测得的转动能级直接相比较。在这里，将它应用于描述丰中子八极形变核^142Ba。计算中使用的四极、八极和十六极形变参量分别为0．127、0．075和-0．03。对^142Ba的基带和负宇称带的计算结果与实验数据的比较示于图1。     

^80Rb的高自旋态研究

在中国原子能科学研究院HI-13串列加速器和日本原子力研究所的串列加速器上,通过3种不     

Reflection Asymmetric Shell Model Description for ^221,^223Ra Nuclei

The octupole component of the mean field would influence single-particle orbits, and further, influence the band structure, and should be clearly manifested itself by the spectroscopy of odd-A nuclei, for example, the appearance of parity doublet bands. Because the spectroscopy properties of the odd-A nuclei have a direct and close relation with the single-particle orbits for which the intrinsic parities are violated,     

光学活性起源的研究——Ⅴ.~(22)Na的正电子湮没与D-、L-、D,L-亮氨酸的不对称作用研究

利用正电子湮没测定技术,研究~(22)Na的β~+粒子对D-、L-、D,L-亮氨酸的不对称作用。实验发现β~+粒子(右旋电子)作用于亮氨酸异构体,三重态正电子素(o-Ps)优先在L-亮氨酸中形成。这一实验说明基本粒子的手征不对称,通过电弱作用力对氨基酸对映体立体有择,在原初状态(Prima-ry State)可被灵敏探针检测到。     

^90Mo可能的八极关联

八极形变核具有反射不对称性的特点，蕴含着丰富的核结构信息。探讨这些核的高自旋行为有助于加深对核结构的认识。     

^86Y核的结构研究及旋称反转

在兰州近代物理所的重离子加速器上,通过能量87 MeV的20Ne束流,入射到带有10 mg铅衬的68Zn靶上,布居了 86Y核的高自旋态。用10台HPGe-BGO反康谱仪,测量了在束g-g符合, 共搜集到150106个两重及两重以上的符合事件。数据经过离线处理后,对该核已知g跃迁开窗及能谱分析,建立了一个