Physics
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983natur.306..247b&link_type=abstract
Nature (ISSN 0028-0836), vol. 306, Nov. 17, 1983, p. 247, 248. Research supported by the Natural Sciences and Engineering Resear
Physics
1
P-Type Semiconductors, Photocathodes, Photoelectric Emission, Dye Lasers, Electron Energy, Photomultiplier Tubes, Time Dependence, Time Lag, Yag Lasers
Scientific paper
Photoelectric emission experiments using very low-intensity nanosecond light pulses with energies near the PE threshold are described which exhibit a type of PE that does not obey Einstein's photoelectric relation. The photosensitive material used was a semitransparent (Cs)Na2KSb (p-type) photocathode in a photomultiplier tube and pulses were provided from a dye laser. While signal-correlated time-delayed pulses of emitted electrons were observed for single light pulses incident on the material, the energies of the electrons were not correlated to the light wavelength. These pulses were due neither to electrical noise nor to single photon luminescence from a particular species.
Billard T. C.
Burns G.
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