Module 2: Kinetic Theory of Gases

Description: Provides fundamental information about gases necessary to understand vacuum device operation.

Length of Time: 4 hours


1. Composition of the atmosphere

2. Residual gas analyzer

3. Absolute temperature scale (Kelvin and Celsius)

4. Standard temperature and pressure

5. Brownian motion

6. Ideal gas laws

a. Charles Law

b. Boyle Law

c. Dalton Law

7. Pressure

8. Mean free path


Student Objectives:

Student will be able to:

1. Describe the gaseous composition of normal atmosphere.

2. Describe the purpose of a residual gas analyzer (RGA).

3. Define the terms "pressure" and "vacuum."

4. Define the terms "standard temperature" and "standard pressure."

5. Convert a given temperature from Celsius to Kelvin and Kelvin to Celsius.

6. State the energy conditions at absolute zero.

7. Explain Brownian motion.

8. Describe the effect of temperature and pressure on the volume of a gas.

9. Describe the effect of the introduction of a gas specie into a volume.

10. Calculate mean free path at a given pressure.

11. Relate mean free path to a function in a vacuum system.


Chambers: Chapter 1 "Gases"

O’Hanlon: Chapter 2 "Gas Properties"

Varian: Chapter 1 "Vacuum Fundamentals"