SU72707A1 - Electron acceleration device - Google Patents

Description

Devices are known for the acceleration of electrons by a wave of an electric field excited in an electron beam lamp by a modulated electron beam.

The operation of the described device is shown in FIG. 1 and 2.

FIG. 1 shows the principle of operation of the device.

From the flat cathode K a beam of electrons emerges, which is modulated between the grids Gj and Go of the gap of the hollow vibrator I.

Having passed the space II, the knock falls on the hollow vibrator III. The latter is designed so that the peripheral part of the electron beam flies against the floor and gives up its energy to the contour. The thin central part of the electron beam enters the accelerating field and thus takes away some of the energy from the vibrator.

Having passed the tube F, this part of the electrons enters the hollow vibrator IV, where it again falls into the accelerating field.

FIG. 2 shows the constructive implementation of the proposed device using two cathodes.

The hot cathode Kj made in the form of a flat spiral serves to create an accelerated part of the electron beam.

An incandescent cathode K.2, consisting of tungsten filaments located along the cylinder lines, serves to create a powerful electron current that excites oscillations. The electron flow, modulated in the space between the GI and Ga grids, is disintegrated in space II into separate bunches. Passing the grid Gg and G, the electrons give up energy to the hollow vibrator III-IV, constructed so that the electron flow crosses it near the antinode of the current wave (AA line). Therefore, the voltage in the area between Oj and g is approximately as many times as large as the supply voltage, as much as the volume of the vibrator IV is larger than the volume of the vibrator III. From the vibrator IV, the wave propagates into the subsequent vibrators V, VI and VII. Through the hole Oi, which plays the role of feedback, part of the energy enters the vibrator I.

The dimensions of the vibrators are chosen so that the electrons are accelerated from g to t, then from m to n, and so on.

№ 72707

The described device aims to create a flow of charged particles at high speeds to conduct studies of the structure of the substance, in particular, for X-ray technology.

Subject invention

Claims (7)

1. A device for accelerating electrons by a wave of an electric field excited in a vibrator by a modulated electron beam, characterized by the use of two electron beams, one of which, a more powerful modulated auxiliary generator, excites an electromagnetic field in the vibrator that serves to accelerate electrons of the other beam, crossing this field. 2. The device according to claim 1, characterized by the use of a large cross-section electron beam, the peripheral part of which, moving in radial directions, serves to excite the field in the vibrator, and the central part is accelerated by this field. 3. The device according to paragraphs. 1 and 2, characterized by the use of two cathodes, one of which, made in the form of a flat helix, is used to create an accelerated electron beam, and the second, made of tungsten filaments located along the forming cylinder, is used to create a powerful electron beam that excites the field vibrator. 4. Device on PP. I-3, characterized in that, in order to obtain a standing wave voltage in the vibrator, according to the amplitude of the higher voltage of the power source, the modulated electron flow, which excites the vibrator field, enters it near the voltage node. 5. The device according to claim 1, characterized by the use of several vibrators with electromagnetic fields excited in them, successively intersected by an accelerated electron beam. 6. The device according to claim 5, characterized by the use of ch. not containing an electromagnetic field, in order to control the phase velocities of the electron flux with the accelerating fields of the subsequent vibrators. 7. The use of the device on PP. 1-6 for obtaining x-rays.