Observation of the Transition from Uncollapsed to Collapsed Excited <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>f</mi></math>-Wave Functions in <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">I</mi></mrow><mrow><mo>−</mo></mrow></msup></mrow></math>, Xe, and <math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Cs</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow></math> via the Giant Post-Collision-Interaction Auger Effect

T. -C. Chiang; D. E. Eastman; F. J. Himpsel; G. Kaindl; M. Aono

doi:10.1103/PhysRevLett.45.1846

Observation of the Transition from Uncollapsed to Collapsed Excited $f$ -Wave Functions in $I^{-}$ , Xe, and ${Cs}^{+}$ via the Giant Post-Collision-Interaction Auger Effect

T. -C. Chiang, D. E. Eastman, F. J. Himpsel, G. Kaindl, and M. Aono

Phys. Rev. Lett. 45, 1846 – Published 8 December 1980

Abstract

The nature of the final $f$ -wave functions, i.e., spatially collapsed versus uncollapsed, involved in $4 d \to 4 f$ , $ε f$ giant absorption resonances in $I^{-}$ , Xe, and ${Cs}^{+}$ is revealed by studying the post-collision interaction (PCI) in the $N_{4, 5} O_{2, 3} O_{2, 3}$ Auger decay of the $4 d$ hole. While small PCI Auger shifts ≲0.2 eV are observed for $I^{-}$ and Xe with uncollapsed $f$ -wave functions, a giant PCI Auger shift of ∼ 1 eV is observed for ${Cs}^{+}$ with collapsed $f$ -wave functions.

Received 30 May 1980

DOI:https://doi.org/10.1103/PhysRevLett.45.1846

Authors & Affiliations

T. -C. Chiang^*, D. E. Eastman, F. J. Himpsel, G. Kaindl^†, and M. Aono^‡

IBM Thomas J. Watson Research Center, Yorktown Heights, New York 10598

^*Permanent address: Department of Physics and Materials Research Laboratory, University of Illinois, Urbana, Ill. 61801.
^†Permanent address: Freie Universität Berlin, D-1000 Berlin 33, Federal Republic of Germany.
^‡Present address: Physical Sciences Laboratory, University of Wisconsin, Stoughton, Wisc. 33589. Permanent address: National Institute for Research in Inorganic Materials, Sakura, Niihari, Ibaraki 305, Japan.