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A: Atomphysik
A 11: Photoionisation I
A 11.1: Vortrag
Dienstag, 23. März 2004, 16:30–16:45, HS 132
Theoretical and experimental investigation of even mp1/25 nl′ autoionizing resonances in the rare gas atoms Ne, Ar, Kr, and Xe — •H. Hotop1, I.D. Petrov2, V.L. Sukhorukov2, T. Peters1, T. Halfmann1, U. Even3, and A. Wünnenberg3 — 1Fachbereich Physik, Technische Universität, 67653 Kaiserslautern, FRG — 2Rostov State University of Transport Communications, 344038 Rostov-on-Don, Russia — 3School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
In a joint theoretical and experimental effort, we have investigated the spectra of even autoionizing resonances mp1/25 nl′ (l′ = 1, 3) of the rare gas atoms Rg = Ne, Ar, Kr, and Xe (m = 2-5). The calculations are based on the Pauli-Fock approach and include core polarization and electron correlation effects at a high level, as described in [1]. Two different experimental setups, both involving a pulsed source of metastable rare gas atoms Rg[mp5 (m+1)s 3P2,0] and a frequency-doubled pulsed dye laser of narrow bandwidth in conjunction with a time-of-flight mass spectrometer for ion detection, were used to study the even np’ (J = 1,2) and nf’(J = 2,3) autoionizing resonances by single photon excitation. The theoretical predictions for the energies, widths and lineshapes of the resonances will be compared with the experimental results.
This work has been supported by the Deutsche Forschungsgemeinschaft, by the Israeli Science Fund and by the research center OTLAP at TU Kaiserslautern.
[1] I. D. Petrov, V. L. Sukhorukov, H. Hotop, J. Phys. B 35 (2002) 323; J. Phys. B 36 (2003) 119