Amplification by secondary electron emission

The experimental data relating to the phenomenon of secondary electron emission from simple and complex surfaces is collected and tabulated. Simple electron multipliers with single stages of multiplication are examined and typical characteristics are shown. A brief description is given of the now obsolete dynamic type. Full details and operating characteristics of multistage electron multipliers using combined electrostatic and magnetic focusing are then given. The final section deals with electron multipliers using only electrostatic focusing. This last group is divided into two classes consisting of multipliers with solid targets and those with grid mesh targets.