Yazar "Gumus, H" için listeleme
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An algorithm for the calculation of heavy ion ranges in SiO2
Kabadayi, O; Gumus, H (Inst Nuclear Chemistry Technology, 2003)The heavy ion ranges in amorphous SiO2 have been calculated by using a technique based on solution of first order ODE's. Br, Au, Hg, Bi, projectiles have been chosen as incident ion. Since the target is assumed to be ... -
Calculation of average projected range and range straggling of charged particles in solids
Kabadayi, O; Gumus, H (Pergamon-Elsevier Science Ltd, 2001)Based on the KRAL equations (Ashworth et al., 1991. J. Phys. D 24, 1376-1380), which take into account second order energy loss moments, projected ranges and range moments of ions in mono-atomic targets were calculated. ... -
Comparison of theoretical stopping powers and application to the range calculation for bismuth ions in Si and SiO2
Gumus, H; Kabadayi, O (Pergamon-Elsevier Science Ltd, 2005)The results are presented here of random stopping powers and ranges for bismuth ions in both amorphous silicon and silicon dioxide for various theoretical electronic stopping power formulas including those of Montenegro ... -
Effective stopping charges and stopping power calculations for heavy ions
In this study the model suggested by Sugiyama has been developed and applied for the calculation of the stopping powers for nonrelativistic heavy ions in various target materials. Sugiyama's model has been expanded to low ... -
Electron inelastic mean free path formula and CSDA-range calculation in biological compounds for low and intermediate energies
Akar, A; Gumus, H; Okumusoglu, NT (Pergamon-Elsevier Science Ltd, 2006)In this study, for low atomic number targets and biological compounds, an inelastic mean free path (IMFP) formula and energy straggling parameter formula are presented, being valid for low and high electron energies. In ... -
Electron stopping power in biological compounds for low and intermediate energies with the generalized oscillator strength (GOS) model
The stopping power formula, based on the generalized oscillator strength (GOS) model, exchange correction and the inelastic differential cross-section (IDCS) given by Inokuti (Rev. Mod. Phys. 43(3) (1971) 297) is presented. ... -
Electronic energy loss of the partially stripped boron-like and carbon-like fast ions
Gumus, H; Ozalp, C; Koroglu, A (Polish Acad Sciences Inst Physics, 2003)An analytical formula of the electronic stopping power expression in this study was derived for swift boron-like and carbon-like ions by using first-order perturbation theory and frozen-charge-state model. The Hartree-Fock-Slater ... -
EPR study of VO2+ and Cr3+ in Li2SO4 center dot H2O single crystal
A single crystal X-band EPR study of VO2+ and Cr3+ in Li2SO4 . H2O was carried out at room temperature. Analysis of the spectra indicates that VO2+ substitutes for Li+ and that there are two magnetically inequivalent Li+ ... -
Range and longitudinal range straggling with various stopping power formulations for oxygen ions in Si and SiO2
Kabadayi, O; Gumus, H (Wiley-V C H Verlag Gmbh, 2005)The results on comparison of different energy-loss formulations as well as calculations of the range and range straggling have been presented for the ion-target system where oxygen ions are incident on amorphous silicon ... -
Simple stopping power formula for low and intermediate energy electrons
Gumus, H (Pergamon-Elsevier Science Ltd, 2005)A simple stopping power formula, modified from that of Rohrlich and Carlson is presented. In this study analytical expressions for effective charge and effective mean excitation energies of target atoms in the modified ... -
Simulation of channelled ion ranges in crystalline silicon
Kabadayi, O; Gumus, H (Pergamon-Elsevier Science Ltd, 2004)We present results from a channelled ion range simulation model based on separation of ion trajectories into three different categories known as random, channelled, and well-channelled. We present this for boron projectiles ... -
Stopping power calculations for partially stripped projectiles in high energy region
Tufan, MC; Koroglu, A; Gumus, H (Polish Acad Sciences Inst Physics, 2005)The electronic stopping cross-section is calculated in the spirit of the Bethe theory. Interaction potential between projectile and target is regarded to have a Coulombic character and we have modified it to take into ...
