Electron Impact Excitations of 98Cf, 99Es, 100Fm 101Md, 102Nb, 103Lr Atoms Ni Subshell İonization Cross Sections by Using Lotz's Equation
Author : Hikmet Bozkurt and Mahmut Aydinol
Abstract :
NonrelativisticN shell (σnrelN) and σnrelNi (i =1,.,7) subshells ionization cross sections by electron impact on 98Cf, 99Es, 100Fm 101Md, 102No, 103Lr calculated. By using Lotz' equation in Matlab, (σnrelN) and N σnrelNi cross section values obtained for 14 electron impact(E0) values in the range of ENi<E0≤7ENi for each atom. Starting from E0=ENi(subshell ionization threshold energies), σnrelN and σnrelN are increasing rapidly with E0. For a fixed E0 = 3,5keV, while Z value increases from 92U ≤ Z ≤ 103Lr atoms; σrelN and σrelNi decrease. Results show that for smaller values of E0(close to ENi), x-ray yields formation of Ni (i =1,…,7) subshells decreases while competing other yields are increase. Results may help to understand similar findings which obtained from other electron impact excitation of N σnrel N, subshells σnrelNi studies for single atoms.
Keywords :
Nonrelativistic σnrel N, subshells σnrelNi subshells ionization cross sections calculations for 92U, 93Np, 94Pu, 95Am, 96Cm, 97Bk atoms, Near Ni subshells threshold region, Electron impact
