Common Vacuum Terminology6- Ningbo Danko Vacuum Technology Co., Ltd.

Common Vacuum Terminology6

1.adsorption：Adsorption of gases or vapors (adsorbates) on solid or liquid (adsorbents) surfaces.
2.physisorption：Adsorption due to physical action.Evaporation Vacuum Coating Machine Factory
3.chemisorption：Adsorption due to chemical action.
4.absorption：The diffusion of gas or vapor (adsorbate) into solid or liquid (adsorbent).
5.α accommodation factor：The ratio of the average energy exchanged between a particle incident on a surface and the actual energy exchanged on the surface to the average energy exchanged when the particle reaches a complete thermal equilibrium condition on the surface.
6.υ impingement rate：In a given time interval, the number of molecules incident on the surface is divided by the time and the surface area.
7.migration：The movement of molecules on the surface.
8.desorption：Release of gases or vapors adsorbed by materials. Release can be natural or accelerated by physical means.