Resonance structure of the photoelectron $\beta_{nl}$ parameter versus autoionizing resonance minima in partial $\sigma_{nl\pm 1}$ cross sections: A model of ``complete'' experiments with \textit{fewer} measurements

POSTER

Abstract

The relationship between the structure of the autoionizing resonance minima in partial photoionization cross sections $\sigma_{nl \pm 1}$ and the resonance profile of the dipole photoelectron angular distribution parameter $\beta_{nl}$ in the vicinity of the resonance is established. From this, the information can be extracted (from known $\beta_{nl}$ alone) on the energy positions and ordering of autoionizing resonance minima in $\sigma_{l\pm1}$, the energies at which $\sigma_{l+1}$ and $\sigma_{l-1}$ are equal, signs and magnitudes of relative phase shifts of the photoionization amplitudes $D_{l\pm1}$ through the autoionizing resonance energy region, and the magnitudes of $D_ {l\pm1}$ at extreme points in $\beta_{nl}$; no tedious experimentation with electron spin polarization or light polarization is required. The established relationship expands our previously developed, so to speak ``point'' model of ``complete'' photoionization experiments with \textit{fewer} measurements [V.K. Dolmatov and S.T. Manson, PRA \textbf{58}, R2635 (1998)] onto a broader energy region [V.K. Dolmatov, E. Guler, S.T. Manson, PRA (submitted)].

Authors

  • Valeriy Dolmatov

    University of North Alabama

  • Rebecca Scott

    UCSB, LBNL, NCSU, University of North Carolina at Chapel Hill, Wright State University, Department of Physics, The University of Memphis, TN 38152, North Carolina State University, Department of Chemical and Biomolecular Engineering, Raleigh, NC, Clemson University, Fisk University, University of North Dakota (Grand Forks), Southern Illinois University, The University of Tennessee Space Institute, SC Governor's School for Science and Mathematics, Francis Marion University, University of North Alabama, Lousiana State University, Department of Physics, Dhaka University, Dhaka, Bangladesh, Head of Government Relations, American Physical Society, Vanderbilt University, Mississippi State University, Emory University, College of William and Mary, University of Tennessee Space Institute, Morehead State University