R Wehlitz et al 1999 J. Phys. B: At. Mol. Opt. Phys. 32 L635 doi:10.1088/0953-4075/32/22/101
The Wannier threshold law examined by photoelectron satellite measurements
R Wehlitz
, M-T Huang, I A Sellin
and Y Azuma
LETTER TO THE EDITOR
We have tested the Wannier threshold law employing a new experimental approach using an electron time-of-flight spectrometer. From the measured relative intensities of the helium He+(n
) photoelectron satellites (n
9) near the double-photoionization threshold, we derived the Wannier exponent 
for the double-photoionization cross section 
2+
E (with E as the excess energy). Reasonable agreement with previous experiments and theoretical predictions has been found.
- PACS
-
32.80.Fb Photoionization of atoms and ions
07.57.-c Infrared, submillimeter wave, microwave and radiowave instruments and equipment
- Subjects
- Dates
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Issue 22 (28 November 1999)
Received 22 July 1999, in final form 30 September 1999
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The Wannier threshold law examined by photoelectron satellite measurements
R Wehlitz et al 1999 J. Phys. B: At. Mol. Opt. Phys. 32 L635
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