ISSN:
1434-6079
Keywords:
PACS. 34.50.Bw Energy loss and stopping power – 79.20.Ap Theory of impact phenomena; numerical simulation – 79.20.Rf Atomic, molecular, and ion beam impact and interactions with surfaces
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: It is usually well accepted that for swift protons, the induced backward and forward electron emission yield is proportional to the projectile electronic stopping power. This was observed in particular for thin amorphous carbon foils. However, this law was established from a non extensive set of experimental data and somewhat confirmed by rough macroscopic theories. We then developed a standard Monte Carlo simulation to predict the yield dependence on proton energy [0.5–10 MeV] and for a wide range of foil thickness. After evaluating the reliability of this simulation, we showed and explained why the law of proportionality cannot generally hold for forward electron emission. In particular, the ratio between forward yield and stopping power generally depends on foil thickness and proton energy. We performed a new experiment that confirmed our theoretical predictions.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100530170143
Permalink