Teilchendesorption von Nichtleiter-Oberflaechen durch Schwerionen Hoher Energie (Particle Desorption from Nonconducting Surfaces by High Energy Heavy Ions)

摘要

The desorption from nonconducting surfaces was investigated for projectile energies between 0.1 and 1.4 MeV/N. The production of positive secondary ions as well as the total particle production of several target substances (vapor-deposited on Al) were measured with Kr, Xe, and U-ions. The total production and the ratio between charged and uncharged particles depend on the projectile mass and energy. Secondary ion production as well as total production scale as the square of the electron energy loss, at low projectile energies. The orientation of the target surface with respect to the projectile affects the total production. The measurement results are best described by the modified lattice potential model.