Photoionization resonance profile parameters of the 3s3p1P1two-electron excitation in He I
- 1 April 1973
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 6 (4), L59-L64
- https://doi.org/10.1088/0022-3700/6/4/004
Abstract
The cross section profile of the 3s3p 1P1 two-electron excitation has been measured in He I. The cross section was assumed to have the form sigma (E)=C(E)+((E-E0)1/2 Gamma a+(1/2 Gamma )2b)/((E-E0)2+(1/2 Gamma )2) where the adjustable parameters a, b, 1/2 Gamma and E0 were determined by a least squares fitting process. The parameter values obtained in the equipment were: a=0.86+or-0.16 cm-1, b=0.27+or-0.13 cm-1, 1/2 Gamma =65.9+or-7.0 meV, E0=69.919+or-0.007 eV. The Fano parameters q and sigma a were determined from a and b and had the values 1.36+or-0.20 and 0.32+or-0.08 cm-1 respectively.Keywords
This publication has 22 references indexed in Scilit:
- Interference effects in photoionization of noble gas atoms outer s-subshellsPhysics Letters A, 1972
- Brueckner-Goldstone Many-Body Perturbation Calculation of Helium PhotoionizationPhysical Review A, 1972
- P1Autoionization States of He in the Elastic Scattering RegionPhysical Review Letters, 1972
- Computer Analysis of Resonance Profiles by the Method of Least SquaresApplied Optics, 1969
- Addendum: Spectral Distribution of Atomic Oscillator StrengthsReviews of Modern Physics, 1969
- The excitation of He+ by electron impactJournal of Physics B: Atomic and Molecular Physics, 1969
- Spectral Distribution of Atomic Oscillator StrengthsReviews of Modern Physics, 1968
- Gas Density Stabilizer for Flow Proportional CountersReview of Scientific Instruments, 1966
- Resonances in e--He+scattering and the photoionization of HeProceedings of the Physical Society, 1965
- Line Profiles in the Far-uv Absorption Spectra of the Rare GasesPhysical Review B, 1965