Arasaki Yasuki, Takatsuka Kazuo, Wang Kwanghsi, McKoy Vincent
Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Komaba, 153-8902, Tokyo, Japan.
Phys Rev Lett. 2003 Jun 20;90(24):248303. doi: 10.1103/PhysRevLett.90.248303. Epub 2003 Jun 19.
The application of femtosecond pump-probe photoelectron spectroscopy to directly observe vibrational wave packets passing through an avoided crossing is investigated using quantum wave packet dynamics calculations. Transfer of the vibrational wave packet between diabatic electronic surfaces, bifurcation of the wave packet, and wave packet construction via nonadiabatic mixing are shown to be observable as time-dependent splittings of peaks in the photoelectron spectra.
利用量子波包动力学计算，研究了飞秒泵浦-探测光电子能谱在直接观测穿过避免交叉的振动波包方面的应用。结果表明，在绝热电子表面之间振动波包的转移、波包的分支以及通过非绝热混合的波包构建，均可作为光电子能谱中随时间变化的峰分裂而被观测到。
