Geometry Dependent Predictions of the Quantum Potential Model for the Anomalous Photoelectric Effect
In a set of older and recent experiments1–4 extremely high intensity laser beams are focused onto metals or gases and anomalous photoelectric emission and gas photo-ionization is observed. The anomalous character of the effect consists of the fact that outcoming photoelectrons are observed although the single photon energy is lower than the work function of the material. The first attempt to interpret this effect was based on a light intensity dependent approach, the multiphoton theory5. This theory makes a definite prediction for the photoelectron current i as a function of the light intensity I, namely i ∝ In where n is the integer part of W/h v + 1,W being the work function of the material. This was however disprooved by experiment6 since the latter showed a linear relation between the current and the light intensity thus discarding the multiphoton hypothesis.
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