Accurate computations of bound state properties in three- and   four-electron atomic systems in the basis of multi-dimensional gaussoids
  Results of accurate computations of bound states in three- and four-electron atomic systems are discussed. Bound state properties of the four-electron lithium ion Li$^{-}$ in its ground $2^{2}S-$state are determined from the results of accurate, variational computations. We also consider a closely related problem of accurate numerical evaluation of the half-life of the beryllium-7 isotope. This problem is of paramount importance for modern radiochemistry. 
Alexei M. Frolov and David M. Wardlaw
physics.atm-clus physics.atom-ph