One- and two-photon ionization cross sections of the laser excited 6s6p^1P_1 state of barium

Details One- and two-photon ionization cross sections of the laser excited 6s6p^1P_1 state of barium One- and two-photon ionization cross sections of the laser excited 6s6p^1P_1 state of barium

2009-06-09

arxiv.org/abs/0906.1638v1

Physics

Atomic Physics

10 pages, 9 figures, submitted to Phys.Rev.A

Scientific paper

Stimulated by a recent measurement of coherent control in photoionization of atomic barium, we have calculated one- and two-photon ionization cross sections of the aligned 6s6p^1P_1 state of barium in the energy range between the 5d_{3/2} and 5d_{5/2} states of Ba^+. We have also measured these photionization spectra in the same energy region, driving the one- or two-photon processes with the second or first harmonic of a tunable dye laser, respectively. Our calculations employ the eigenchannel R-matrix method and multichannel quantum defect theory to calculate the rich array of autoionizing resonances in this energy range. The non-resonant two-photon process is described using lowest-order perturbation theory for the photon-atom interactions, with a discretized intermediate state one-electron continuum. The calculations provide an absolute normalization for the experiment, and they accurately reproduce the rich resonance structures in both the one and two-photon cross sections, and confirm other aspects of experimental observations. These results demonstrate the ability of these computationally inexpensive methods to reproduce the experimental observables in one- and two-photon ionization of heavy alkaline earths, and they lay the groundwork for future studies of the phase-controlled interference between one-photon and two-photon ionization processes.

Affiliated with

Also associated with

No associations

Rating

One- and two-photon ionization cross sections of the laser excited 6s6p^1P_1 state of barium does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with One- and two-photon ionization cross sections of the laser excited 6s6p^1P_1 state of barium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and One- and two-photon ionization cross sections of the laser excited 6s6p^1P_1 state of barium will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-64542