Application of variational Monte Carlo method to the confined helium atom
الموضوعات : Journal of Theoretical and Applied Physics
Salah B Doma
1
(Mathematics Department, Faculty of Science, Alexandria University)
Fatma N El-Gammal
2
(Mathematics Department, Faculty of Science, Menoufiya University)
الکلمات المفتاحية: Variational Monte Carlo method, Helium atom, Compression effect, 31.15.xt, 02.70.Ss, 83.50.Uv,
ملخص المقالة :
AbstractA new application of variational Monte Carlo method is presented to study the helium atom under the compression effect of a spherical box with radius (rc). The ground-state energies of the helium atom were calculated for different values of rc. Our calculations were extended to include Li+ and Be2+ ions. The calculations were based on the use of a compact accurate trial wave function with five variational parameters. To optimize variational parameters, we used the steepest descent method. The obtained results are in good agreement with previous results.
