Journal article
Double photoionization of argon into the 3s3p⁵ ¹P- and³P-states



Publication Details
Authors:
Möbus, B.; Schartner, K.; Ehresmann, A.; Schmoranzer, H.
Publication year:
1994
Journal:
Zeitschrift für Physik D Atoms, Molecules and Clusters
Pages range:
285-290
Volume number:
30

Abstract
Double photoionization of argon was studied by photon induced fluorescence spectroscopy (PIFS). Cross sections for the double photoionization into the 3s3p5 1P, 3P states of Ar++ are presented for exciting photon energies between threshold and 120 eV. In the threshold range the energy dependencies of these cross sections were determined for the first time. Singlet and triplet states are populated with comparable probabilities at equal excess energies, in contrast to predictions of the extended Wannier theory. At hv=100 eV the spin-or-bit splitting of the 3s3p5 3P state was resolved, and a cross section for the production of Ar++ 3s 03p6 1S0 was determined for the first time.


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