... transverse variations in intensity (often termed “heel effect”), (Mark & Dunn, 1 985 ). Advances in Measurement Systems8 0 Wang Suyu, Qixue Tang, Zhongyou Ren, Min Zhu, He Jing, Jiasu Wang, (2001b). ... sealed to reduce the infusion of external contaminants and / or the escape of any (possibly pressurized) internally contained dielectric oil. Advances in Measurement Systems8 4backscattered and ... resulting in a release of energy (in the form of a high energy photon), corresponding to the binding energies of the shells involved. The energy released produces discrete, well defined recombinational...