Common Vacuum Terminology 4

1.ψ collision rate：In a given time interval, the average number of collisions of a molecule (or other specified particles) relative to other gas molecules (or other specified particles) divided by that time. The average number of collisions should be obtained at a sufficient number of molecules and a sufficient time interval.China Decorative Vacuum Coating Machine Manufacturers
2.χ volume collision rate：In a given time interval, the average number of collisions between gas molecules in the space around a given point is divided by the time and the volume of the space range. The time interval and volume should not be too small.
3.G quantity of gas：The volume of an ideal gas in equilibrium is the product of its pressure. This value must indicate the gas temperature or be converted to the value at 20 C. Note: Gas quantity refers to 2/3 of the intrinsic energy (or potential energy) of the gas in the volume of the gas.