Developments in the application of hyperspherical coordinates in a unified treatment of
bound states and resonances of two-electron atomic systems and other general Coulomb …

The authors attempt to give a comprehensive discussion of observations of atomic negative-
ion resonances throughout the periodic table. A review of experimental and theoretical …

A comparison has been made between the states of a 3-valence-electron system and a 3-
valence-neutron system. The fermions are supposed to move in a sphere. The structures …

Hyperspherical coordinates are used to study properties of Coulombic three-body systems
of arbitrary masses. Consider a system ABA, which consists of two identical particles A and a …

By non-coincident electron spectroscopy, it is shown in N 7++ Ar that the electron spectrum
allows an identification of double, triple and quadruple electron capture into autoionising …

Abstract Since Coulson's Tilden Lecture in 1951 there have been many developments in
ideas about the chemical bond and about molecular structure. One aspect of those …

A computational method for calculating the hyperspherical adiabatic potential curves for
three-electron atomic systems is presented. This method allows us to obtain accurate …

The nodal structures of intrashell states of a three-valence-electron atom are investigated.
We expand the wave function in the body frame of the three electrons and show that the …

A model with all the radial degrees of freedom frozen is used to simulate the intrashell states
of four-valence-electron atomic systems. By inspecting the two-and three-body densities …

We study the electron correlations in singly, doubly, and triply excited states of a three-
electron atom. While electron correlation in general is weak for singly excited states …