Dependence of the heavy-ion-induced desorption yield on the primary-ion energy loss

Abstract
The dependence of the secondary-ion yield Y on the energy loss dE/dx of fast (MeV/u) primary ions has been measured for organic and inorganic samples. It is found that the dependence of Y on dE/dx can be expressed in the whole dE/dx range investigated (1≤dE/dx≤54 keV μg1 cm2) as Y∝(dE/dx-S)n, where S is a threshold energy loss. Different exponents n exist for positive and negative secondary ions as well as ions desorbed from different samples.

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