Continuum mechanical model for heavy ion induced desorption

Abstract

The concept of a “hot core track region” (limited region in the track of the projectile ion, where the electron temperature is large compared to the lattice temperature before equilibration), as used in other works, is investigated. The results (lifetime, dimension and temperature of the HCTR) show that in insulator targets the formation of this HCTR can play an important role for the excitation of molecular motion. One possi ble mechanism for this excitation is investigated and discussed. In the macroscopic limit molecular neutral secondary yields are calculated by an estimate of the energy available for cluster formation.

Supported by Bundesministerium für Forschung und Technologie