Katz Gil, Zeiri Yehuda, Kosloff Ronnie
Department of Physical Chemistry and the Fritz Haber Research Center, the Hebrew University, Jerusalem 91904, Israel.
J Phys Chem B. 2005 Oct 13;109(40):18876-80. doi: 10.1021/jp052107k.
A nonadiabatic quantum dynamic model has been developed to study the process of electron emission from a low-work-function metal surface. The process is initiated by scattering a highly vibrationally excited NO molecule from a surface composed of a Cs layer covering a Ru crystal. The model addresses the increasing quantum yield of the electron emission as a function of the molecular vibrational excitation and incident kinetic energy. The reaction mechanism is identified as a long-range harpooning electron transfer to a molecular ion which is then accelerated toward the surface. Upon impact, the molecular ion emits its excess electron.
已开发出一种非绝热量子动力学模型来研究低功函数金属表面的电子发射过程。该过程由一个高度振动激发的NO分子从覆盖有Ru晶体的Cs层组成的表面散射引发。该模型研究了作为分子振动激发和入射动能函数的电子发射量子产率的增加。反应机制被确定为向分子离子的远程捕鲸电子转移，然后分子离子向表面加速。撞击时，分子离子发射其多余的电子。
