https://doi.org/10.1140/epjd/e2008-00010-x
High resolution measurement and MQDT analysis of the 5d9 6s2 np, nf (J = 1) autoionizing resonances of mercury
1
Atomic and Molecular Physics Laboratory, Quaid-i-Azam University, 45320 Islamabad, Pakistan
2
Physikalisches Institut, Universität Bonn, Nussallee 12, 53115 Bonn, Germany
Corresponding author: a baig@qau.edu.pk
Received:
2
October
2007
Revised:
13
November
2007
Published online:
23
January
2008
We report new high resolution photoabsorption measurements of the 5d-subshell excitation spectra of mercury using a 3-meter normal incidence spectrograph equipped with a 6000 line/mm holographic grating and synchrotron radiation emitted by the Bonn 2.5 GeV electron accelerator as the background source of continuum. The observed spectra reveal autoionizing resonances attached to the 5d9(2D5/2)6s2 and 5d9(2D3/2)6s2 parent ion levels of mercury. We have analysed the line shapes of the lower members of the 5d96s2 np and nf J = 1 autoionizing resonances using the phase shifted formulation of the MQDT and extracted the interaction parameters.
PACS: 32.70.Jz – Line shapes, widths, and shifts / 32.80.-t – Photon interactions with atoms / 32.80.Dz – Autoionization / 32.80.Fb – Photoionization of atoms and ions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008