The X-Ray Spectrum(Changes in Target Material) Increase in Z: 1.Increase in X-ray intensity since greater mass and positive charge of the target nuclei increase the probability of X-ray emission total output intensity of Z 2.Characteristic lines shift to higher energy,K and L electrons are more strongly held 3.No change in E maxThe X- Ray Spectrum ( Changes in Target Material) Increase in Z: 1. Increase in X- ray intensity since greater mass and positive charge of the target nuclei increase the probability of X- ray emission total output intensity of Z 2. Characteristic lines shift to higher energy, K and L electrons are more strongly held 3. No change in E max