排序方式: 共有44条查询结果,搜索用时 0 毫秒
41.
基于翟红生和韩克利给出的势能面[Zhai H S, Han K L 2011 J. Chem. Phys. 135 104314], 运用准经典轨线方法对H+NH及其同位素取代反应的立体动力学性质进行了理论研究. 分别计算并讨论了碰撞能Ec=8和16 kcal/mol时反应的极化微分反应截面、两矢量k-j'相关分布函数P(θr)、 三矢量 k- k'- j'相关分布函数P(φr)、空间分布函数P(θr, φr). 结果表明, 对于上述的两个碰撞能, 由于同位素取代反应中质量因子的不同, 同位素效应对H+NH反应的立体动力学性质的影响很明显. 相似文献
42.
43.
Theoretical study of the influence of intense femtosecond laser field on the evolution of the wave packet and the population of NaRb molecule 下载免费PDF全文
Employing the two-state model and the time-dependent wave
packet method, we have investigated the influences of the parameters of the intense
femtosecond laser field on the evolution of the wave packet, as well
as the population of ground and double-minimum electronic states of
the NaRb molecule. For the different laser wavelengths, the evolution of
the wave packet of 6{ }^1\Sigma ^ + state with time and
internuclear distance is different, and the different laser
intensity brings different influences on the population of the
electronic states of the NaRb molecule. One can control the evolutions
of wave packet and the population in each state by varying the laser
parameters appropriately, which will be a benefit for the light
manipulation of atomic and molecular processes. 相似文献
44.
Based on a conventional torsion pendulum,we develop a forced oscillation viscometer with ultra-high viscosity sensitivity of 2×10~(-7)Pa·s working at frequencies near the resonance.The viscosity is achieved by exploiting the phase lag for the angle displacement behind the torque,instead of the resonant curve,i.e.,the variation of angle displacement amplitude versus frequency.The general formula for the measurement of the visco-elasticit.y of complex fluids is also presented.With such precision it is easy to measure tiny change in viscosity result from circumstantial influences.Deionized water and two kinds of NaCl aqueous solutions are chosen to demonstrate the performance of our home-made torsion pendulum-based viscometer. 相似文献