INTERFERENCE EFFECTS IN STARK SPECTRA OF WEAKLY AUTOIONIZING 5DNF STATES OF BARIUM

Authors
KUIK GJ VASSEN W LAHAIJE CTW HOGERVORST W
Citation
Gj. Kuik et al., INTERFERENCE EFFECTS IN STARK SPECTRA OF WEAKLY AUTOIONIZING 5DNF STATES OF BARIUM, Zeitschrift fur Physik. D, Atoms, molecules and clusters, 39(2), 1997, pp. 127-137
Citations number
31
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Zeitschrift fur Physik. D, Atoms, molecules and clusters → ACNP
ISSN journal
01787683
Volume
39
Issue
2
Year of publication
1997
Pages
127 - 137
Database
ISI
SICI code
0178-7683(1997)39:2<127:IEISSO>2.0.ZU;2-U
Abstract
Weakly autoionising 5d(3/2)nf Rydberg states of barium around n = 60 h ave been studied in the presence of a static electric field. The exper iment has been carried out in a CW laser-atomic-beam setup. In between the overlapping n = 60 and 61 angular momentum manifolds broad 5d63d resonances interact with the manifold states resulting in pronounced i nterferences. These interferences (anti-crossings) have been analysed by a direct diagonalisation procedure neglecting interactions with the continuum, and by a Multichannel Quantum Defect Theory (MQDT) analysi s including continuum interactions.