Evidence of an excited angular correlation mode in high-lying
- 14 September 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 69 (11) , 1633-1635
- https://doi.org/10.1103/physrevlett.69.1633
Abstract
We report an ab initio calculation of the photoionization spectrum of He in the energy regime hitherto unexplored theoretically, namely, energies near the (N) states up to N=7. The recently reported experimental photoionization spectrum of He is fully reproduced by using our previously reported hyperspherical close-coupling method. We find clear evidence of an excited angular correction mode that was presumably overlooked in the analysis of the experimental data. We also present a calculated spectrum below (N=7) as a reference for future experiments.
Keywords
This publication has 24 references indexed in Scilit:
- Photoionization of He above then=2 thresholdPhysical Review A, 1991
- Photoionization of two-electron atoms using a nonvariational configuration-interaction approach with discretized finite basisPhysical Review A, 1991
- Helium photoionization between theN=2 andN=3 thresholds including angular distribution and resonance properties: AK-matrixbasis-set calculationPhysical Review A, 1991
- Spline methods for resonances in photoionisation cross sectionsJournal of Physics B: Atomic, Molecular and Optical Physics, 1990
- Resonances in helium photoionisationJournal of Physics B: Atomic, Molecular and Optical Physics, 1990
- The variational R-matrix method: resonances in the photoionisation of He for photon energies 58-65 eVJournal of Physics B: Atomic, Molecular and Optical Physics, 1989
- Calculation of helium photoionization with excitation including angular distribution and resonance structurePhysical Review A, 1989
- Resonances in the simultaneous photoionisation and excitation of HeJournal of Physics B: Atomic, Molecular and Optical Physics, 1988
- New Autoionizing Atomic Energy Levels in He, Ne, and ArPhysical Review Letters, 1963
- Classification of Two-Electron Excitation Levels of HeliumPhysical Review Letters, 1963