Hannover 2003 – scientific programme
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A: Atomphysik
A 14: Fallen und Kühlung von Atomen und Ionen
A 14.5: Talk
Thursday, March 27, 2003, 12:00–12:15, F342
Antiprotonic and Electronic Transitions in Argon, Krypton and Xenon — •Khalid Rashid1, Detlev Gotta2, Burkhard Fricke3, Paul Indelicato4, and Leo Simons5 — 1Department of Mathematics, Quaid-i-Azam University, Islamabad 44000, Pakistan — 2Institut fuer Kernphysik, FZ-Juelich, 52425 Juelich, Germany — 3Fachbereich Physik, Unversitaet Kassel, 34109 Kassel, Germnay — 4Laboratoire Kastler-Brossel, Ecole Normale Superieure et Universite Pierre et Marie Curie, 4, Place Jussieu, 75231 Paris 05, France — 5Paul-Scherer Institut, 52432 Villingen, Switzerland
We have measured X ray spectra of antiprotonic Argon, Krypton and Xenon atoms with Si(Li) detector at the LEAR facility of CERN at energies < 2.0, 34, and 6.0 keV respectively, at low pressures to prevent electron refilling from neighbouring atoms. The analysis of the spectra and the identification of the transitions with the aid of Multiconfiguration Dirac Fock calculations of the combined antiproton-electrons atomic system yields useful information on the degree of ionizaion and the antiprotonic orbital. In this contribution we shall present experimental data and theoretical analysis of antiprotonic Argon, Krypton and Xenon. We have been able to identify a number of transitions as a complicated interplay between antiprotonic transitions in the presence of a few electrons. The spectra of Argon, Krypton and Xenon have some common features as well as some Z characteristic features.