PHOTON ENERGY-DEPENDENCE OF IONIZATION-EXCITATION IN HELIUM AT MEDIUMENERGIES

Authors
WEHLITZ R SELLIN IA HEMMERS O WHITFIELD SB GLANS P WANG H LINDLE DW LANGER B BERRAH N VIEFHAUS J BECKER U
Citation
R. Wehlitz et al., PHOTON ENERGY-DEPENDENCE OF IONIZATION-EXCITATION IN HELIUM AT MEDIUMENERGIES, Journal of physics. B, Atomic molecular and optical physics, 30(2), 1997, pp. 51-58
Citations number
34
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
30
Issue
2
Year of publication
1997
Pages
51 - 58
Database
ISI
SICI code
0953-4075(1997)30:2<51:PEOIIH>2.0.ZU;2-L
Abstract
We have measured the photoionization-excitation-to-photoionization rat io for He(+)nl (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 He(+)nl (n = 2-5) which agree with theoretical predi ctions. We show that the satellite-to-main-line ratios are consistent with experimental double-to-single photoionization ratios and agree we ll with recent measurements.