Role of vibrationally excited NO in promoting electron emission when colliding with a metal surface: a nonadiabatic dynamic model.
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.
Katz
Gil
G
Department of Physical Chemistry and the Fritz Haber Research Center, the Hebrew University, Jerusalem 91904, Israel.
Zeiri
Yehuda
Y
Kosloff
Ronnie
R
D002586:Cesium / Q000737:chemistry*; D004583:Electrons; D008956:Models, Chemical; D009569:Nitric Oxide / Q000737:chemistry*; D011789:Quantum Theory; D012428:Ruthenium / Q000737:chemistry*; D013499:Surface Properties; D014732:Vibration
D002586:Cesium; D009569:Nitric Oxide; D012428:Ruthenium