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- W1966281645 abstract "The desorption of CH4 physisorbed on Ni(111) is observed to be induced by collision with Ar atoms incident with energies less than 2 eV. The absolute cross section for collision‐induced desorption of CH4 in the low coverage limit of an isolated CH4 molecule and from a saturated CH4 monolayer is measured as a function of the kinetic energy and incident angle of the Ar beam. The dominant mechanism for collision‐induced desorption is determined to involve the direct collision of the incident Ar with the physisorbed CH4. Indirect, surface mediated desorption processes and multiple desorptions are found to be unimportant. Three‐dimensional, classical molecular dynamics simulations based upon a hard sphere/hard cube model of the direct collision mechanism show that the complicated dependence of the desorption cross section at low CH4 coverage on the Ar energy and incident angle is the result of two competing dynamical effects: the increase in the geometrical collision cross section and the decrease in the Ar ki..." @default.
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- W1966281645 date "1990-09-15" @default.
- W1966281645 modified "2023-09-27" @default.
- W1966281645 title "Collision‐induced desorption of physisorbed CH4 from Ni(111): Experiments and simulations" @default.
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- W1966281645 doi "https://doi.org/10.1063/1.458737" @default.
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