Izvorni znanstveni članak
Emission of short-wave radiation during ion impact on solid surfaces
M. S. Jwad
; Department of Physics, College of Science, Basrah University, Basrah, Iraq
H. A. Jassem
; Department of Physics, College of Science, Basrah University, Basrah, Iraq
T. A. Selman
; Department of Physics, College of Science, Basrah University, Basrah, Iraq
Sažetak
The possibility of short-wave photon emission during surface scattering of positive ions is investigated by selection of the type of charge-exchange process (one- or two-electron processes), through the calculation of the neutralization probabilities and the charge-transfer cross sections. These probabilities are calculated statically as a function of distance between the incident ion and the surface, and dynamically as a function of the ion velocity. The model is applied to real systems such as He+/semiconductor (silicon and germanium), taking into account the difference in the physical constants of the two systems. We found that emitted photons have short wavelengths, lying in the ultraviolet range of the electromagnetic spectrum of the helium emission spectrum.
Ključne riječi
impact of He+ on surfaces; charge transfer process; neutralization probabilities; short-wave emission
Hrčak ID:
302744
URI
Datum izdavanja:
1.7.2010.
Posjeta: 171 *