Eur. Phys. J. D 41, 229-236 (2007)
https://doi.org/10.1140/epjd/e2006-00235-7

Line shape parameters study of the 6p7p (¹P₁, ³D₁ and ³P₁): Autoionizing resonances in barium

Atomic and Molecular Physics Laboratory, Department of Physics, Quaid-i-Azam University, Islamabad, 45320, Pakistan

Corresponding author: ^a baig@qau.edu.pk

Received: 29 July 2006
Revised: 2 October 2006
Published online: 20 October 2006

Abstract

We report a systematic line shape analysis study of the 6p7p configuration based ¹P₁, ³D₁ and ³P₁ autoionizing resonances in barium using a Nd:YAG pumped dye laser system in conjunction with a thermionic diode ion detector. The even parity isolated autoionizing resonances have been approached via four intermediate states 6 snp ¹P₁ (6 ≤n ≤8) and 5d6p ¹P₁. A comparison of the Fano parameters of the resonance profiles reveals that the width of an autoionizing resonance is independent of the excitation path while the line profile parameter changes with the selection of different intermediate states.