WebMay 17, 2024 · Gas-phase scattering experiments have been carried out in order to measure the velocity dependence of the integral cross section. The availability of the projectile (here, He, Ne, and Ar) in a large speed range is of great relevance to perform measurements as a function of the collision velocity. WebApr 11, 2024 · Molecular-beam scattering experiments arguably offer far better control of initial quantum states and access to a broader range of surface temperatures, but their interpretation in terms of desorption requires the additional assumption that all incident molecules stick to the surface and fully accommodate before leaving (i.e., “trapping ...
Setting benchmarks for modelling gas–surface interactions using ...
WebJan 1, 1979 · It is of interest to note that this idea is not specific to electrochemistry: for example modulated reactive molecular beam scattering experiments [9,10] have been … WebJul 1, 1990 · Resonantly enhanced multiphoton ionization (REMPI) laser spectroscopic and molecular beam-surface scattering techniques are coupled to study inelastic and … grove ridge carefree rv resort dade city
Molecular and atomic beam scattering from surfaces
WebReactive and nonreactive gas-surface interactions were studied by modulated molecular beam mass spectrometry on Pt(111) and stepped Pt(111) surfaces under ultra-high vacuum conditions. The angular distribution of helium atoms scattered from the stepped Pt(553) surface was measured as a function of the angle of incidence (polar, theta, and ... Webwhere n A and n B are the number densities of the respective reagents at the interaction region, σ r is the reaction cross section, g the magnitude of the relative velocity between the reactants, and ΔV the volume of intersection of the beams. For a typical experiment employing continuous supersonic beams, the number densities of the atomic and … WebJan 30, 2024 · In the experiments, a high-energy molecular beam containing atomic and molecular oxygen (93% atoms and 7% molecules) was directed at a high-temperature carbon surface. The measurements revealed that carbon monoxide (CO) is the dominant reaction product and that its formation required a high surface coverage of oxygen atoms. grove richland apartments nashville