sticking coefficient


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sticking coefficient

[′stik·iŋ ‚kō·i‚fish·ənt]
(physical chemistry)
The fraction of all atoms incident on a surface that are adsorbed on the surface.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
This analysis revealed the fact that despite of its least sticking coefficient of about 5%, Zn content having numerous quantity is present within the mixture.
where, [s.sub.i] is the sticking coefficient for gas species i and R is the universal gas constant in (g*[m.sup.2])/([s.sup.2]*mol*K).
[s.sub.i] sticking coefficient for species i (dimensionless)
The amount of water vapor buildup is proportional to the number of impacts of water molecules on the exposed surfaces, and the number of impacts depends upon the air's relative humidity, the exposure time, and the probability (sticking coefficient) of an impacting molecule being adsorbed.
Additionally, the probability of a molecule re-adsorbing (sticking coefficient) rises and fewer molecules are pumped away.
The term sticking coefficient is used to describe the probability of an impacting molecule sticking, or adsorbing, on a surface.
The first monolayers that adsorb will have the highest sticking coefficient, but it will depend upon the cleanliness of the surface since many processes don't require a total removal of all of the water molecules adsorbed on the surface.
The possibility of the molecule resorbing, called the sticking coefficient, will depend upon the condition of the surface in terms of the availability of a sorption site and the energy level of the surface.
Although a molecule's journey will be just as long, the sticking coefficient will drop and the desorbed molecule's time in the chamber will be greatly decreased.