Ion bombardment of polyethylene
作者： Keith Beardmore , Roger Smith
DOI: 10.1016/0168-583X(95)80145-C
关键词: Chemical physics 、 Molecular dynamics 、 Radical 、 Radiation damage 、 Polyethylene 、 Atomic physics 、 Chemistry 、 Picosecond 、 Molecule 、 Sputtering 、 Argon
摘要: Abstract The bombardment of polyethylene by argon atoms is examined molecular dynamics (MD) simulations. radiation damage causes chain scission, cross linking and carbonisation the target. evolution gas loss volatile species in form ejected clusters analysed number type molecules quantified. process which these effects occur discussed. It found that a single impact trajectory may be divided into two parts, first having duration under 0.4 picoseconds second lasting for many picoseconds. initial bond breaking sputtering small hydrocarbon radicals. At later times recombination takes place between fragments remaining within target, producing varying size diffuse through target escape.
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