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In this paper we explain the photoelectric effect in a variant of thestandard model of non relativistic quantum electrodynamics, which is in someaspects more closely related to the physical picture, than the one studied in[BKZ]: Now we can apply our results to an electron with more than one boundstate and to a larger class of electron-photon interactions. We will specify asituation, where ionisation probability in second order is a weighted sum ofsingle photon terms. Furthermore we will see, that Einstein's equality\[E_{kin}=h\nu-\bigtriangleup E>0\] for the maximal kinetic energy $E_{kin}$ ofthe electron, energy $h\nu$ of the photon and ionisation gap $\bigtriangleup E$is the crucial condition for these single photon terms to be nonzero.Comment: 59 pages, LATEX2

IONIZATION BY QUANTIZED ELECTROMAGNETIC FIELDS: THE PHOTOELECTRIC EFFECT