Laser-Induced Transitions between Triply Excited Hollow States

Abstract

We present an ab initio calculation of the Li+ photoion yield in the presence of laser coupling between the triply excited 2s22p2Po and 2s2p2 2De resonances in lithium, the first of which is assumed excited by synchrotron radiation from the ground state. The laser coupling between the triply excited states is shown to lead to a significant and readily measurable modification of the line profile which provides a unique probe of the dipole strength between highly correlated triply excited states.