Double photoexcitation of1P0states in helium
- 28 July 1993
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic, Molecular and Optical Physics
- Vol. 26 (14) , L399-L405
- https://doi.org/10.1088/0953-4075/26/14/004
Abstract
For P0 states of helium the authors formulate a Schrodinger equation in perimetric coordinates in which the rotational coupling is already pre-diagonalized. Expansions in near-complete basis sets and complex scaling techniques allows the determination of highly accurate ab initio parameters for doubly excited resonant states and photo cross sections. The results are in excellent agreement with recent high-quality experimental data.Keywords
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