Generation of powerful pulses of X-radiation in IREB-dense gas system

The quest for perfect Bremsstrahlung targets feasible for rapidly expanding technology of high-power electron accelerators led the researchers of the seventies to the idea of applying thin metal foils placed into magnetic field. Further development of this trend led to the idea of intensive electron beams along the current carrying conductor B-gradient drift application. Usage of the background gas in the pressure range of some Torr in the drift chamber gives rise to charge and current neutralization of the beam, which provides effective transport of electron beams with currents considerably exceeding the Alfven limit. Azimuthal magnetic field provides multiple traversal of the thin targets by electrons which causes high increase of the beam energy deposition and of the soft part of Bremsstrahlung spectrum yield. The improved construction of the device enabled nearly 100 % of the diode-generated electron beam to be delivered to the target which consisted of two thin Tanfalum foils placed like-V, and to create a high-effective Bremsstrahlung converter with enhanced yield of X-rays in 100 keV energy range. To retain the advantages of thin multitraversal targets and to expand the field of their application, the authors proposed to use some heavy gases with pressures of atmospheric order as the working material.