Heidelberg 1999 – scientific programme
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A: Atomphysik
A 14: Poster
A 14.13: Poster
Thursday, March 18, 1999, 16:30–19:00, PY
5pnp autoionizing series of Sr: Observation and theoretical analysis — •Michael Kompitsas1, Samuel Cohen1, Agisilaos Bolovinos2, Mireille Aymar3, Eliane Luc-Koenig3, and Perikles Tsekeris2 — 1Nat. Hellenic Research Foundation, Athens, Greece — 2Univer. of Ioannina, Ioannina, Greece — 3Lab. Aime Cotton, Orsay, France
The even parity 5pnp (n=12−16) J=0,1,2 Rydberg series of Sr were investigated in an atomic beam by the isolated-core excitation (ICE) technique. Low intensity ICE spectra as well as "power spectra" were recorded for each n, in which Rydberg states with higher n were observed. Due to the strong mixing of the 5p1/2np with the 5p3/2np series, the spectra appear very complicated. In addition, spectra for different J values overlap strongly, making the level assignment very difficult. These problems were overcome by comparing the experimental spectra with theoretical ones, based on calculations combining the R-matrix and MQDT methods. Very good agreement between the
theoretical and experimental spectra was obtained.