Texts: What is the maximum photon energy that could be produced from an electron in an X-ray tube that had a peak voltage of 114 kV? E = __________ keV = __________ J. The X-ray tube peak voltage is then increased by a factor of 1.59. Determine: a) The new maximum photon energy: E2 = __________ keV. b) The change in likelihood of a photoelectric event occurring: It changes by a factor of __________. c) The change in likelihood of a Compton event occurring: It changes by a factor of __________.