Mechanistic study of ion beam induced molecular desorption from organic surfaces

Ion beam induced desorption techniques have found useful applications in molecular analysis of organic and biological surfaces. Detection of sputtered neutrals by multiphoton ionization of not only leads to signal enhancement but also separates desorption the ionization process. The mechanism(s) by which neutral molecules desorb from the surface upon keV ion impact has been investigated. Mechanistic insights into the neutral ejection process have been obtained by kinetic energy and angular distribution measurements of desorbed molecules after 8 keV Ar...