@article{Doma_El-Gammal_2023, title={Application of variational Monte Carlo method to the confined helium atom}, volume={6}, url={https://oiccpress.com/journal-of-theoretical-and-applied-physics/article/application-of-variational-monte-carlo-method-to-the-confined-helium-atom/}, DOI={10.1186/2251-7235-6-28}, abstractNote={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.}, number={1}, journal={Journal of Theoretical and Applied Physics}, publisher={OICC Press}, author={Doma, Salah B and El-Gammal, Fatma N}, year={2023}, month={Nov.} }