25MeV/u~(40)Ar引起的反应中碎片同位素分布的研究

本文描述了２５ＭｅＶ／ｕ４０Ａｒ＋２７Ａｌ、５８Ｎｉ、１１５Ｉｎ反应中在小角区方向测得的出射碎片同位素分布及其产额，给出了出射碎片的中子数与质子数之比（Ｎ／Ｚ）和靶核的关系。并对出射碎片的来源进行了分析。     

用修正的擦碎模型研究碎裂反应的同位素分布

对统计擦碎模型(SAA)的计算方法进行修正和优化,并引入参数化的介质中核子-核子碰撞截面和核物质密度分布弥散度,可很好符合从中能到高能下碎裂反应产生同位素分布的实验截面,并能计算和拟合远离峰位、很低截面的同位素分布.     

氢(氘、氚)的非对称同位素替代分子与低能氦原子(E=0 .1 eV) 碰撞分波截面研究和计算

当入射氦原子能量E=0.1 eV时,用密耦方程(Close Coupling Equat ion)研究和计算了氢的非对称同位素替代分子HD、TD、DT-He碰撞.首先考虑了非对称同位素替代时质心偏移量对势能函数的影响,得到在新质心坐标系中势能函数表达式,并计算了 E=0.1 eV时弹性碰撞00-00分波及非弹性碰撞激发00-01、00-02、00-03、00-04分波截面.     

Nuclear Fusion Induced by Coulomb-Hydrodynamic Explosion of Deuterium Clusters in Intense Laser Pulses

Considering the Coulomb-hydrodynamic explosion induced by the interaction of a deuterium cluster target with an ultra-intensity femtosecond laser, we analyse the mechanism of generating energetic deuterium nuclei for the fusion. We propose formulae for expansions of deuterium ion duster which are driven by Coulomb-hydrodynamic explosion. Hence the kinetic energies of deuterium nuclei, the expansion time and exploding efficiency of deuterium ion cluster have been estimated.     

Shape Coexistence for ^179Hg in Relativistic Mean-Field Theory

The potential energy surface of ^179Hg is traced and the multi-shape coexistence phenomenon in that nucleus is studied within the relativistic mean-field theory with quadrupole moment constraint. The calculation results of binding energies and charge radii of mercury isotopes are in good agreement with the experimental data.     

Vibrational Distribution of Hydrogen Molecular Ions in High-Energy Ionization Processes

A theoretical time-dependent wave-packet dynamics method is applied to calculate the distribution of vibrational states of hydrogen molecular ions produced in high-energy ionization processes of hydrogen molecules. The isotope effect is elucidated in agreement with the available experimental measurements. Our proposed method should be readily applied in other atomic and molecular processes considering great advances in electronic computation science and technology.     

^160Tb同位素踪研究稀土元素铽在雏鸡体内的分布和转运

＾１６０Ｔｂ－ＥＤＴＡ注入美国海兰鸡种蛋，孵出雏鸡，解剖取２１种组织，器官，用γ能谱测定了＾１４０Ｔｂ，证明了＾１６０Ｔｂ－ＥＤＴＡ能透过种蛋胎膜进入雏鸡各组织和器官中。     

高温氘等离子体中的势垒贯穿

讨论了高温氘等离子体中的势垒贯穿问题。在现有高温氘等离子体参数下，氘核间必须历经库仑散射与隧道贯穿相结合的复合贯穿才能引发核聚变。冷核聚变与热核聚变在本质上没有区别，都需要借助隧道效应才能发生，它们之间的差异仅在于引发隧道贯穿效应的初始条件不同。因此，在冷核聚变研究中除了过热外．也应有放射性物质的释放。