THE ND(1)DELTA-G (N=11-15) RYDBERG STATES OF K-2 STUDIED BY OPTICAL-OPTICAL DOUBLE-RESONANCE SPECTROSCOPY AND SPACE-CHARGE LIMITED DIODE IONIZATION DETECTOR

Five bound nd(1) Delta(g) (n = 11-15) electronic states have been investigated using optical-optical double resonance excitation followed by ionization detection using an ultrasensitive space charge limited diode, which detects ion signals (presumably K-3(+) produced by associative ionization). The molecular constants and the Rydberg-Klein-Rees potential curves for these states have been generated. The dissociation energies, additional binding energies, and molecular constants due to the weakly bound Rydberg bonding delta(g) orbitals are discussed. (C) 1995 Academic Press, Inc.