Abstract
The photoionization cross sections of two even-parity excited states and of atomic Ba at the ionization-laser wavelength of were measured. We found that the total cross section depends on the relative polarization of the atoms and the ionization-laser light. With density-matrix algebra, we show that, in general, there are at most three parameters in the photoionization cross section. Some of these parameters are determined in this work. We also present the measurement of the radiative lifetime of five even-parity excited states of barium.
- Received 3 March 2006
DOI:https://doi.org/10.1103/PhysRevA.74.012512
©2006 American Physical Society