corner
corner
APS » Journals » Phys. Rev. Lett. » Volume 78 » Issue 24
< Previous Article | Next Article >

Phys. Rev. Lett. 78, 4553–4556 (1997)

Breakdown of the Independent Particle Approximation in High-Energy Photoionization

Download: PDF (115 kB) Buy this article Export: BibTeX or EndNote (RIS)

E. W. B. Dias, H. S. Chakraborty, and P. C. Deshmukh
Department of Physics, Indian Institute of Technology—Madras, Madras 600036, India

Steven T. Manson
Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303

O. Hemmers, P. Glans, D. L. Hansen, H. Wang, S. B. Whitfield, and D. W. Lindle
Department of Chemistry, University of Nevada, Las Vegas, Nevada 89154-4003

R. Wehlitz, J. C. Levin, and I. A. Sellin
Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996-1200

R. C. C. Perera
Advanced Light Source, Lawrence Berkeley Laboratory, Berkeley, California 94720

Received 18 February 1997; published in the issue dated 16 June 1997

The independent particle approximation is shown to break down for the photoionization of both inner and outer nℓ (ℓ>0) electrons of all atoms, at high enough energy, owing to interchannel interactions with the nearby ns photoionization channels. The effect is illustrated for Ne 2p in the 1 keV photon energy range through a comparison of theory and experiment. The implications for x-ray photoelectron spectroscopy of molecules and condensed matter are discussed.

© 1997 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.78.4553
DOI:
10.1103/PhysRevLett.78.4553
PACS:
32.80.Fb
 
< Previous Article | Next Article >