Observation of direct multiquantum vibrational excitation in gas-surface scattering: NH/sub 3/ on Au(111)
Journal Article
·
· Phys. Rev. Lett.; (United States)
Vibrationally excited NH/sub 3/ molecules are observed in the scattering of NH/sub 3/ (v = 0) from Au(111). We observe up to three quanta of vibrational excitation in the ..nu../sub 2/ ''umbrella'' vibrational mode of NH/sub 3/. The vibrational excitation probability scales linearly with the kinetic energy of the incident beam above a threshold energy corresponding to the quanta excited, and is independent of the surface temperature, T/sub s/, over the range 300 Kless than or equal toT/sub s/less than or equal to800 K. These results are discussed in terms of an electronically adiabatic collisional mechanism for vibrational excitation.
- Research Organization:
- Sandia National Laboratories, Albuquerque, New Mexico 87185
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5645390
- Journal Information:
- Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:24; ISSN PRLTA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104 -- Metals & Alloys-- Physical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMMONIA
ARRHENIUS EQUATION
COLLISIONS
ELEMENTS
ENERGY
ENERGY DEPENDENCE
ENERGY LEVELS
EQUATIONS
EXCITED STATES
GOLD
HIGH TEMPERATURE
HYDRIDES
HYDROGEN COMPOUNDS
KINETIC ENERGY
MEDIUM TEMPERATURE
METALS
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
SCATTERING
SURFACES
TEMPERATURE DISTRIBUTION
THRESHOLD ENERGY
TRANSITION ELEMENTS
VIBRATIONAL STATES
360104 -- Metals & Alloys-- Physical Properties
640302 -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
656003* -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMMONIA
ARRHENIUS EQUATION
COLLISIONS
ELEMENTS
ENERGY
ENERGY DEPENDENCE
ENERGY LEVELS
EQUATIONS
EXCITED STATES
GOLD
HIGH TEMPERATURE
HYDRIDES
HYDROGEN COMPOUNDS
KINETIC ENERGY
MEDIUM TEMPERATURE
METALS
MOLECULE COLLISIONS
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
SCATTERING
SURFACES
TEMPERATURE DISTRIBUTION
THRESHOLD ENERGY
TRANSITION ELEMENTS
VIBRATIONAL STATES