ENERGY-LEVELS AND TRANSITION-PROBABILITIES OF BOUND EXCITED-STATES OF BE-LIKE N-IV

We present the theoretical energy values and the transition probabilities for a series of singly and doubly excited states below the first ionization threshold of the Be-like N IV ion calculated in a simple nonrelativistic configuration-interaction procedure using a finite L2-basis set constructed from B splines. Our calculated energies and radiative lifetimes are found to agree closely with all available observed data. © 1990.