Inner-Shell Photodetachment Thresholds of Transition Metal Negative Ions

POSTER

Abstract

Inner-shell photodetachment threshold studies of transition metal negative ions in Fe- and Ru- have been conducted using the merged ion-photon beam technique at the Advanced Light Source beamline 10.0.1. The ions extracted from the SNICS source were mass selected and merged collinearly with the photon beam. Inner-shell photodetachment and subsequent Auger decay produce positive ions which are detected as a function of photon energy. Excitations from p-electrons to open d-shells were carried out in Fe- and Ru-. Our measurements revealed for the first time a d-wave Wigner law in single-photon measurements of negative ions. This work is funded by DOE, office of Science, BES, Chemical Sciences, Geosciences and Biosciences Divisions. NDG and CWW acknowledge support from NSF grant No.0456916 and 0757976.

Authors

  • Ileana Dumitriu

    Western Michigan University, Kalamazoo, MI 49008

  • R.C. Bilodeau

    Western Michigan University and Lawrence Berkeley National Lab, LBNL, ALS, CA 94720

  • T.W. Gorczyca

    Western Michigan University, Kalamazoo, MI 49008, Western Michigan University

  • Wesley Walter

    Dept. of Physics, Denison University, Granville, OH 43023, Denison University

  • N.D. Gibson

    Dept. of Physics, Denison University, Granville, OH 43023

  • Alex Aguilar

    LBNL, ALS, CA 94720, The Advanced Light Source, Lawrence Berkeley Laboratory

  • Z. Pesic

    Western Michigan University, Kalamazoo, MI 49008

  • D. Rolles

    Western Michigan University, Kalamazoo, MI 49008

  • N. Berrah

    Western Michigan University, Kalamazoo, MI 49008