Abstract
Partial cross sections for the photoionisation of the excited states 1s22s22p63s23p54s 1,3P0 of argon between the thresholds for ionisation to the 1s22s22p63s23p5 2P0 and 1s22s22p63s3p6 2Se states of the positive ion have been calculated in the LS coupling approximation using the R-matrix method. For the 3p5kp 1(S, P, D)e and 3p5kp 3(S, P, D)e final states, these exhibit characteristic minima which occur at different energies in different final states due to the anisotropic interaction of the ejected electron with the residual ion. The total cross sections are dominated by the 1s22s22p63s3p64s 1,3Se resonances respectively where the autoionising transition takes place in the n=3 shell and the outer 4s electron is a spectator to the transition. This is a general feature of the photoionisation of the excited states of all rare gases. The photoelectron angular asymmetry parameter is also calculated. A unitary transformation to the jls coupling scheme appropriate to argon is made and the total cross sections as well as the photoelectron angular asymmetry parameters for the photoionisation of the fine-structure levels are calculated.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of Physics B: Atomic and Molecular Physics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
