Photoionization of excited barium 6s6p1P1

Abstract
To clarify some essential discrepancies between experimental and recent theoretical studies of the photoionization cross section of excited 6s6p 1 P1 barium, we present experimental data of the relative photoionization cross section of the 6s6p 1 P1 state of barium in the energy range between the Ba+ 6s and Ba+ 5d3/2 thresholds.