ISSN:
1432-0649
Keywords:
32.80K
;
79.20D
;
79.60
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The photoinduced electron emission from the surface of a solid gold target irradiated by single picosecond pulses of an erbium laser is investigated. The applied laser intensity (5–120 GW/cm2) corresponds to the intermediate interaction region between the pure multiphoton and tunnel effects, where the decisive Keldysh-parameter, γ, is in the range 1〈γ〈12=n 0. In the light intensity region which is free of surface heating (I L〈80 GW/cm2), the slope of the measured logarithmic intensity dependence of the photocurrent decreases from the n 0=12 perturbative value down to n ℞ 5. Therefore the experiment shows that the Keldysh-type theories, which have recently been proved to describe correctly the ionization of atoms, are also valid to a certain extent in the case of the photoeffect in metals.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00357140
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