High-density Electronic Excitation Research Articles

Neutral particle emission from zinc oxide surface induced by high-density electronic excitation: T Nakayama et al, Rad Effects, 67, 1982, 129–133

Neutral particle emission from zinc oxide surface induced by high-density electronic excitation: T Nakayama et al, Rad Effects, 67, 1982, 129–133

Electronic-excitation mechanism in sputtering induced by high density electronic excitation

On the basis of the assumption that two holes are attractive in a dense electron-hole plasma near the surface because of the Anderson negative- U interaction, the yield of laser- and ion-induced sputtering in the electronic excitation regime was calculated as a function of electron-hole concentration in a plasma. It is found that the model gives an order-of-magnitude account of the yields of these two sputtering processes.

Neutral particle emission from zinc oxide surface induced by high-density electronic excitation

Abstract Emission of neutral zinc and oxygen atoms and oxygen molecules emitted from zinc oxide surface by laser irradiation have been measured. It is found that the emission intensity starts to increase when the laser intensity exceeds a certain threshold value, indicating that the particle emission is a high density electronic excitation effect. The energy spectrum of emitted particles is found not to follow the Maxwellian distribution.