Differential cross section minima in elastic scattering of electrons from zinc

Low-energy electron elastic scattering cross sections for excited Au and Pt atoms

“…In the TCSs we identify and delineate the important physical effects such as the Wigner threshold law, Ramsauer-Townsend (RT) minima, shape resonances and BEs of the excited Au À and Pt À anions. The critical minima [26,27] that characterize the DCSs are also extracted from the DCSs and the BEs as well. The TCSs are evaluated using the Mulholland formula [28] implemented through the complex angular momentum (CAM) description of electron-atom scattering while the DCSs are evaluated using a partial wave expansion.…”

Critical points for electron–Mg atom elastic scattering

“…Later, Khare et al [5] proposed another method which can be used to calculate the critical points for any atom. Since then there has been considerable progress in the determination of the critical points for elastic scattering of electrons by a number of atoms, namely Be, C, N, O, F, Ne, Ar, Ca, Zn, Kr, Xe and Hg [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. For the alkaline earth atoms, which feature the same two-electron structure as He, there are calculations of critical points in [6] for Be (Z=4) and [5] for Ca (Z=20) atoms.…”