R Wehlitz et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 L51 doi:10.1088/0953-4075/30/2/004
Photon energy dependence of ionization-excitation in helium at medium energies
R Wehlitz
, I A Sellin, O Hemmers
, S B Whitfield, P Glans, H Wang, D W Lindle, B Langer§, N Berrah§, J Viefhaus|| and U Becker||
LETTER TO THE EDITOR
We have measured the photoionization-excitation-to-photoionization ratio for 
(n = 2 - 6) at several photon energies from 90 to 900 eV. By extrapolating these values we could determine the asymptotic high-energy ratios for (n = 2 - 5) which agree with theoretical predictions. We show that the satellite-to-main-line ratios are consistent with experimental double-to-single photoionization ratios and agree well with recent measurements.
- PACS
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32.80.Fb Photoionization of atoms and ions
32.80.Rm Multiphoton ionization and excitation to highly excited states
31.15.-p Calculations and mathematical techniques in atomic and molecular physics
- Subjects
- Dates
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Issue 2 (28 January 1997)
Received 25 October 1996
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Photon energy dependence of ionization-excitation in helium at medium energies
R Wehlitz et al 1997 J. Phys. B: At. Mol. Opt. Phys. 30 L51
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