Experimental Study of Angular Dependence of Scattering Differential Cross-Sections in Double-Photon Compton Scattering Using A Scintillation Detector

The doubly differential collision cross-sections of double-photon Compton process have been measured for 662 KeV incident -photons by using a scintillation detector. This technique avoids the use of complicated slow-fast coincidence set-up used till now for observing this higher order process. The measurements confirm that the probability of occurrence of this process is being quite small, energy spectra of the two final photons being continuous and the occurrence of this process is more pronounced when one of the two final photons is soft. The present results are in good agreement with the theory of Mandl and Skyrme.