Lecture 3 - Vacuum theory and gauges

Thursday, Oct 15. Basic theory of flow at low pressure, viscous vs molecular flow, mean free path, pump-down curves, water adsorption. Types of pressure gauges: manometers, mechanical gauges, heat-loss gauges, ionization gauges.

Alex's lecture notes
Lecture slides
Using the fundamental vacuum relationship Q=SP (pdf)
Theory of thermal conductivity pressure gauges (pdf)

Extra reading: http://www.vacuumlab.com/articles.htm

© Alex Sessions 2011