<prompt> What percent of electron energy is converted into heat during production of X-rays?99948984  <response>: The purpose of the target in an x-ray tube is to convert the kinetic energy of the colliding electrons into x-ray photons. The conversion of the kinetic energy of the electrons into x-ray photons is an inefficient process, with more than 99 of the electron kinetic energy converted to heat.The target is made of tungsten, an element that has several characteristics of an ideal target material, including the following:High atomic number 74, allows for efficient x-ray production.High melting point 3422C, to withstand heat produced during x-ray production.High thermal conductivity173 Wm-1K-1, to dissipate the heat produced away from the target.Low vapor pressure at the working temperatures of an x-ray tube, to help maintain vacuum in the tube at high operating temperatures.Key Concept:The conversion of the kinetic energy of the electrons into x-ray photons is an inefficient process, with more than 99 of the electron kinetic energy converted to heat.White and Pharoahs Oral Radiology 8th EDITION 