Advertisement

Microwave ionization of Rydberg states of the barium ion

  • M. Seng
  • U. Eichmann
  • V. Lange
  • T.F. Gallagher
  • W. Sandner
  • 53 Downloads

Abstract:

We have investigated the electric field ionization of highly excited (ns) and (nd) Rydberg states of the barium ion by microwave fields. For states with a principal quantum number \(\) the observed microwave ionization threshold fields show the Z 3 /3n 5 dependence expected on the basis of previously observed ionization of neutral Rydberg states with Z=1. We show that for states in this n regime microwave ionization is a state selective detection technique. Threshold fields for states with n>40, however, depart from the expected behaviour, the thresholds become broader and shift to higher fields. For a total of 58 states we present the field strengths where 90%, 50% and 10% ionization occur.

PACS. 31.50.+w Excited states - 32.30.Jc Visible and ultraviolet spectra - 32.80.Rm Multiphoton ionization and excitation to highly excited states (e.g., Rydberg states) 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© EDP Sciences, Springer-Verlag 1998

Authors and Affiliations

  • M. Seng
    • 1
  • U. Eichmann
    • 1
  • V. Lange
    • 2
  • T.F. Gallagher
    • 3
  • W. Sandner
    • 1
  1. 1.Max-Born-Institut for Nonlinear Optics and Short Pulse Spectroscopy, 12489 Berlin, GermanyDE
  2. 2.Fachhochschule Furtwangen, 78120 Furtwangen, GermanyDE
  3. 3.University of Virginia, Charlottesville, VA 22901, USAUS

Personalised recommendations