Neutron generator

Abstract

The invention discloses a neutron generator which comprises a shell, an ion source arranged in the shell and a target assembly arranged in the shell, the target assembly and the ion source are correspondingly arranged, and the ion source is fixed to the inner wall of the shell through a first partition plate. The ion source comprises a first cathode, a second cathode and an anode arranged between the first cathode and the second cathode, the anode comprises at least two anode cylinders, and the first cathode and the second cathode respectively comprise at least two cathode elements corresponding to the at least two anode cylinders. The multi-ion source structure is provided with a first cathode and a second cathode which comprise at least two cathode elements and an anode which correspondingly comprises at least two anode cylinders, so that ions ionized between the cathodes and the anode can be led out in a multi-beam mode, and the leading-out area of beams is increased; therefore, the sputtering rate on the target film per unit area is reduced, and the service life of the target assembly is prolonged.

Description

technical field [0001] The present invention relates to the field of nuclear technology, in particular to a device for generating neutrons. Background technique [0002] Ions generated by ion sources can be used in a variety of applications including, but not limited to, particle accelerators for mass spectrometry, medical devices and diagnostics, and semiconductor manufacturing. The ions generated by the ion source can be accelerated toward the target and used to produce nuclear reactions, including those that produce neutrons. Conventional neutron sources employ discrete equipment for ionization, acceleration, and target fusion of ionized species. These neutron sources can include applications for various ion generation methods, as well as capabilities specific to particle accelerators. Neutron sources have been developed for a variety of applications such as neutron radiography, materials science, condensed matter physics, and non-destructive testing and evaluation of m...

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Problems solved by technology

[0003] In the prior art, neutron tubes and neutron generators have been developed, wherein the neutron tubes are small-diameter neutron tubes mainly used in oil logging, and the ceramic tubes are damaged due to the service life of the target and metal sputtering of the ion source. The reason for the decline in insulation performance is that the working life is short, generally hundreds of hours; the neutron generator is usually a medium / large neutron accelerator, although it has a long working life, it needs to be equipped with a vacuum system and a cooling system. equipment, thus making it bulky, expensive, and unsuitable for use as neutron activation on-line analysis equipment

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