Elastic and inelastic collision of low energy proton scattering from rare gas solids

✍ Scribed by Masahiko Kato; Ryutaro Souda

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 215 KB
• Volume: 256
• Category: Article
• ISSN: 0168-583X
• DOI: 10.1016/j.nimb.2006.11.092

✦ Synopsis

We have carried out the systematic measurements of energy spectrum for low energy (50-500 eV) proton scattering from rare gas solids of Ar, Kr and Xe. The observed energy spectra showed a multiple peak structure. The multiple peaks have been ascribed to the multiple inter-band electronic excitations, from valence to conduction band of the rare gas solid. In addition, each peak exhibited an asymmetric shape with a long tail toward the low energy side. In order to study these feature of spectrum, we develop a simple statistical model. This model involves three physics parameters: the average number of close collisions C, the electronic excitation probability p, and the asymmetry index a. From C and p, the electronic stopping power can be estimated, whereas from a, the nuclear stopping power can be estimated.