Energy loss of swift ions in different concentration and temperature of carbon plasma.

The energy loss of heavy ions depends on its velocity and charge density, and according to energy loss function theorem, the energy loss depends on the kinds of dielectric function of the target. In present work random phase approximate (RPA is used, and the Brandt-Kitagawa BK model for projectile charge space distribution is used to determine the mean equilibrium charge state 〈Qeq〉. In this work, we present a calculation and comparison the stopping power for incident ions (proton, argon, calcium and krypton), in different concentration and temperature of carbon plasma. The stopping power is calculated using Bohr theory, Bethe theory and dielectric function. The results appear stopping power from dielectric function is directly proportional to concentration of plasma and inversely with temperature. Also, the equilibrium charge state for solid and plasma target are coincidence at ion energy ≥1MeV. The equilibrium charge state depends on the incident ion atomic number and slightly of the electron density, and depends also on the temperature of the target. All equations have been programmed to present work using FORTRAN-90 and a program has been written for numerical calculations. [ABSTRACT FROM AUTHOR]