Electromagnetic radiation of X-ray-induced Compton current on metal surface

Obliquely-incident X-ray photons interacting with metal through Compton scattering can produce a large current density along the metal surface in the incident direction. In this paper, angular distributions of scattered electron momentum and differential cross section were calculated. The results show that for photon energy of 1 MeV and X-ray intensity up to 1021 W·m-2, the Compton current density on the metal surface is as large as 107 A·m-2. The electromagnetic pulse caused by this current was calculated using a one-dimensional electrodynamic model. It is found that radiated magnetic field per unit length of metal is derived with the magnitude of 106A·m-1 and the duration of picoseconds. The emitted electromagnetic radiation is well-directed, propagating mainly in the specular directi