排序方式: 共有6条查询结果,搜索用时 5 毫秒
1
1.
2.
3.
4.
A typical slow reaction H(2S) + S2(X3∑g) → SH(X2П) +S(3P) ona new surface: Quantum dynamics calculations 下载免费PDF全文
Quantum dynamics calculations for the title reaction H(2S) + S2(X3-Σg) → SH(X2Π) + S(3P) are performed by using a globally accurate double many-body expansion potential energy surface [J. Phys. Chem. A 115 5274(2011)].The Chebyshev real wave packet propagation method is employed to obtain the dynamical information, such as reaction probability, initial state-specified integral cross section, and thermal rate constant. It is found not only that there is a reaction threshold near 0.7 eV in both reaction probabilities and integral cross section curves, but also that both the probability and cross section increase firstly and then decrease as the collision energy increases. The existence of the resonance structure in both the probability and cross section curves is ascribed to the deep potential well. The calculation of the rate constant reveals that the reaction occurring on the potential energy surface of the ground-state HS2is slow to take place. 相似文献
5.
微波滤波器在现代微波技术领域中的作用举足轻重,而基于LTCC(低温共烧陶瓷)技术的多层微波滤波器因具有满足现代电子系统要求的高频化、小型化及低成本等许多优点而成为当今微波领域常用滤波器之一。如何提高LTCC滤波器性能使其损耗更小,更适应实际工程的高要求就成为了关键一环。本文结合经典的分布参数理论设计出一个中心频率为1.2GHz,带宽40MHz的新型LTCC多层滤波器,其尺寸为14mm×20mm×2mm,并在此基础上结合金属电导率和趋肤深度的理论对金属层改进,设计出性能更优的LTCC滤波器,从而得出改善LTCC滤波器性能的方法,并做出实物验证了与仿真的一致性。 相似文献
6.
1