METHOD OF GENERATING DECELERATION RADIATION WITH PULSE-BY-PULSE ENERGY SWITCHING AND RADIATION SOURCE FOR REALISING SAID METHOD Russian patent published in 2012 - IPC H05H9/00 G01N23/04 

FIELD: physics.

SUBSTANCE: invention is a method of generating deceleration radiation with pulse-by-pulse energy switching and a radiation source for an inspection system with a pulse-by-pulse energy switching system between two controlled values, with independent control of the dose rate for each energy. The source has local radiation protection, provides for each energy small beam diameter on the deceleration target, high percentage of particles captured in the acceleration mode and small width of the energy spectrum. The source is based on an accelerating structure with a standing wave, which is powered by a compact multibeam klystron with low beam voltage and focused by permanent magnets. Pulse-by-pulse switching of the value of the energy of the accelerated electron beam between two values at the same frequency is achieved by switching the value of input power of the klystron from pulse to pulse and, consequently, the output power of the klystron and amplitude of the field in the accelerating structure. The required dose rate is ensured by switching from pulse to pulse voltage of the control electrode of the electron gun and, consequently, the value of the current of the beam injected into the accelerating structure.

EFFECT: simple system, reduced dimensions and high reliability of the radiation source.

20 cl, 5 dwg