Page 433 - Academic Press Encyclopedia of Physical Science and Technology 3rd Analytical Chemistry
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Encyclopedia of Physical Science and Technology EN012C-568 July 26, 2001 15:32
Photoelectron Spectroscopy 83
FIGURE 22 UPE spectra of cyclohexane, cyclohexene, and 1,4-cyclohexadiene. [From Bischof, P., et al. (1969).
Helv. Chim. Acta 52, 1745.]
the electron must escape into the vacuum, and in going surface (see inset in Fig. 25). A variation of the polar angle
from the interior of the crystal through the surface into the θ selects different parallel components
vacuum only the parallel component k of the momentum
2 −1/2
is conserved and not the component perpendicular to the k = 2mE kin π sin θ (23)
