On the escape mechanism of secondary electrons from insulators

✍ Scribed by A.J. Dekker

• Book ID: 104162219
• Publisher: Elsevier Science
• Year: 1954
• Weight: 527 KB
• Volume: 21
• Category: Article
• ISSN: 0031-8914
• DOI: 10.1016/s0031-8914(54)90162-7

✦ Synopsis

Starting from the Boltzmann transport equation, the influence of lattice vibrations, traps and donor levels on the secondary yield of insulators is investigated by making a number of simplifying assumptions. For high trap densities it is found that the yield for high primary energies should be inversely proportional to the square root of the trap density. The slowing-down of secondaries as a result of the interaction with lattice vibration leads to a temperature effect which for MgO is in agreement with the observations. Within the approximations made, the energy distribution of the emitted secondaries turns out to be independent of temperature and seems to be rather insensitive to the initial energy distribution of the secondaries as produced by the primary beam.