C Dawson et al 2001 J. Phys. B: At. Mol. Opt. Phys. 34 L525 doi:10.1088/0953-4075/34/16/104
C Dawson1, S Cvejanovic1,4, D P Seccombe1, T J Reddish1, F Maulbetsch1, A Huetz2, J Mazeau2 and A S Kheifets3
Show affiliations(γ, 2e) triple differential cross sections are presented for helium at 60 eV above the photodouble ionization threshold with energy-sharing ratios (R = E2/E1) for the two ejected electrons of R = 1, 5 and 11. The measurements were taken using a toroidal spectrometer and linearly polarized light from an undulator beamline (SU6) at the Super-ACO storage ring. Good agreement is found with TDCSs obtained by the CCC method and by the length gauge of 3C theory.
32.80.Fb Photoionization of atoms and ions
31.15.-p Calculations and mathematical techniques in atomic and molecular physics
Issue 16 (28 August 2001)
Received 30 May 2001, in final form 10 July 2001
Published 1 August 2001
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