Collisional quantum interference on rotational energy transfer： physical interpretation of the differential interference angle

Collisional quantum interference （CQI） on the intramolecular rotational energy transfer is observed in an experiment with a static cell, and the integral interference angles are measured. To obtain more accurate information, an experiment with a molecular beam is carried out, and thereby the relationship between the differential interference angle and the scattering angle is obtained. Based on the first-Born approximation of time-dependent perturbation theory, the theoretical model of CQI is developed in an atom-diatom system in the condition of the molecular beam, with the long-range interaction potential taken into account. The method of measuring correctly the differential interference angle is presented. The tendencies of the differential interference angle changing with the impact parameter and rel- ative velocity are discussed. The theoretical model presented here is important for understanding or performing the experiment in the molecular beam.     

Cross Sections for ππ←→ρρ and ππ←→ωω Reactions

To study chemical equilibrium of hadronic matter created in relativistic heavy ion collisions, phase shifts for the Ⅰ = 2ππ elastic scattering and cross sections for the Ⅰ= 2 and 0ππ←→ρρand Ⅰ=0ππ←→ωω reactions are calculated with the prior and post forms. While the post prior equivalence holds for the elastic scattering, the post-prior discrepancy of the inelastic scatterings relies on the spin-dependent terms of quark-antiquark potential.     

重粒子碰撞过程在惯性约束核聚变诊断的作用

应用连续扭曲波程函初态近似方法（COW—EIS）计算了入射粒子能量从30 kev到10 Mev口粒子与各价碳原子15壳层的碰撞电离的总截面，进而得出在惯性约束核聚变（Inertiαl Controlled Fusion。简称1CF）聚变条件下该反应的速率系数，同时利用Bethe公式，我们也计算了电子与各价破原子1s壳层碰撞电离总截面厦ICF环境下该反应的速率系数．通过比较口粒子压电子与碳原子碰撞K-壳层电离Kα信号贡献大小，探讨Kα信号利用诊断α粒子分布的可能性。     

对高能碰撞末态粒子的阶乘矩拟合修正曲线的方法

高能碰撞末态粒子在相空间的动力学分布存在着非均匀因素的影响,通过对这种非均匀因素影响的仔细研究,引入了修正系数,得到了拟合修正曲线的判据,给出了计算修正系数的方法.     

碰撞模式-电感耦合等离子体质谱法测定河流底泥中钴、钼、锑、铊

建立电感耦合等离子体质谱法测定河流底泥中钴、钼、锑、铊的含量。选用硝酸-双氧水-氢氟酸体系进行河流底泥的微波消解，利用内标铑和铼进行在线校正，并用动能歧视碰撞模式消除测定干扰。钴、钼、锑、铊的质量浓度在1～100μg/L范围内线性关系良好，相关系数均大于0.999 7，检出限为0.009～0.021 mg/kg，测定结果的相对标准偏差为1.2%～5.2%(n=6)，样品加标回收率为80.0%～93.2%。该方法可为河流底泥测定提供技术参考。     

碰撞对钠分子菱形能级系统中高位能级布居的影响

在实验室上研究了碰撞过程对钠分子菱形能级系统高位能级布居的影响。无多普勒加宽的洛仑兹尖峰随缓冲气体压力的增大很快消失；加入少量缓冲气体，碰撞激发过程对以多普勒宽度为特征的信号有一定的增强作用，但加入过量缓冲气体会由于消布居作用使信号减弱。上述结果在速率方程近似下加以解释。