Biological modification equipment employing high-density and low-energy ion beams of hot cathode

Abstract

The invention provides biological modification equipment employing high-density and low-energy ion beams of a hot cathode. The biological modification equipment comprises an experimental cavity, an ion source arranged outside an air inlet end of the experimental cavity, and an object stage arranged in the experimental cavity for placing a sample, wherein the ion source comprises a heating wire, an LaB6 block cathode and an anode which are sequentially arranged in an ionization chamber along an air inlet direction; the ionization chamber is connected with the experimental cavity through an extraction system; the extraction system comprises a coil, an electronic cavity and an extraction electrode arranged in the electronic cavity; the electronic cavity communicates with the experimental cavity; the coil is arranged at the outer side of the ionization chamber; and the LaB6 block cathode excites arc discharge plasma and carries out biological modification on the sample on the object stage through acceleration of the extraction system. The density of the plasma is improved by 10-100 times in comparison with that of existing glow discharge plasma on the market, the emission density is high, the beam current density of the ion beams is high, the effect is obvious and the biological modification efficiency is high.

Description

technical field [0001] The invention relates to the technical field of ion beam bioengineering, in particular to a hot cathode high-density and low-energy ion beam biomodification device. Background technique [0002] The research found that there are different levels of disordered holes and cavities inside the crop tissue. On the one hand, ion implantation produces sputter etching on the surface of organisms, and on the other hand, these holes and cavities are connected to form gradually deeper channels, so that subsequent ions can penetrate deep into the genetic material, thereby causing damage, mutation, etc. Biological effects, after implanting energetic ions with energy of tens to hundreds of keV into organisms, mass, energy and charge can act on organisms together, which is more abundant and complex than the effects of other ionizing radiations. [0003] The research directions of ion beam biology mainly include mutagenesis breeding, ion beam-mediated transgene, low...

AI Technical Summary

Problems solved by technology

[0005] The ion beam density of this device is low, and the tungsten wire is easily poisoned, has poor stability, and is easy to evaporate and burn out

The maintenance cost of the ion source is very high, and there is currently a lack of a low-energy ion beam biomodification device that operates with long pulses and high parameters

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