Parametric study of laser Compton-backscattering from free relativistic electrons

The frontal collisions of a laser with free relativistic electrons result in Compton-backscattered γ-rays. The energy of these γ-rays is dependent on the laser and electron energy and ranges from keV to tens of MeV. In a sufficiently narrow backscattering angle the γ-rays are nearly monochromatic. he past 30 years there have been several attempts to produce γ-ray beams by laser backscattering from relativistic electrons. One aim is to produce γ-rays in a high MeV energy range with rates useful for nuclear physics, another for medical applications in energy range from high keV to low MeV. er to enable conceptual studies for medical applications, a computer program IMRCBS based on the theory of laser Compton-backscattering from free relativistic electrons was written. The present document gives: (a) description of the kinematics of Compton-backscattering mechanism, and (b) parametric study of laser Compton-backscattering. udy shows, that if variable energy of γ-beam is required, then the use of a free electron laser in combination with fixed electron energy accelerator is a better combination than the use of a fixed laser energy with electron accelerator with variable energy.