High-intensity flash X-ray production by REB

Calculations are made of diode geometry and of target parameters required to maximize the photon fluence from flash X-ray source for electron energy 1.0 MeV. It was found that bremsstrahlung efficiency increasing, converter optimum thickness decreasing and bremsstrahlung spectrum softering occured due to multiple interaction of electron beam with thin target under action of self electromagnetic field. Main parameters of a new simple large-area flash X-ray source are briefly described.