SU1633464A1 - Device for high temperature plasma generation and containment - Google Patents

Abstract

The invention relates to plasma physics and can be used to obtain and retain high-temperature plasma when conducting research on the problem of controlled thermo-nuclear synthesis. The aim of the invention is to increase the density of high-temperature plasma and its retention efficiency. In an open trap with magnetic plugs, an electrically conductive inner wall is provided, isolated from the main chamber, while the magnetic system and electrically conductive inner wall are made so that the magnetic field lines are parallel to this wall at its location and, moreover, this wall is connected to the positive pole of the power supply. An electron beam is injected into the chamber through the magnetic field of an acute-angled geometry, plasma is injected towards it into the chamber, and through the holes in the inner electrically conductive wall, gas is also injected into the chamber. As a result, a discharge is ignited in the p chamber, burning in a crossed electric and magnetic field. Near the internal electrically conductive wall an iridescent layer is formed. The high-energy ions injected from the near-anode layer into the main volume of the working chamber create an axial layer, the plasma density of which is an order of magnitude higher than that in the near-anode layer 3 h. item f-ly, 6 ill. i ate with

Description

The invention relates to plasma physics and can be used to obtain and retain high-temperature plasma when conducting research on the problem of controlled thermo-nuclear synthesis.

The purpose of the invention is to increase the density of high-temperature plasma and its retention efficiency.

Fig I shows a structural diagram of the device; Figures 2--4 illustrate embodiments of the inner electrically conductive wall; in fig. 5 is a diagram of the direction of the electric and magnetic fields in the device; Fig. 6 is a projection of the trajectory of the movement of ions onto a plane parallel to the axis of the working chamber.

The device contains (Fig. I) a working chamber 1, an electron gun 2, a plasma injector 3 (plasma coaxial gun), coils 4 and 5, creating a magnetic field 1 of an acute angle geometry at the location of the electron gun 2, coils 6 and 7, creating a magnetic field cork configuration in the main volume of the working chamber 1, electrically conductive inner and outer walls (anode) 8, gas chambers 9, electrical power source 10; The shape of the electrically conductive inner wall and the magnetic field configuration are selected so that there are no normal walls e components of the magnetic field.

The device is equipped with an inlet system

05

WITH

with

4- O5 U

gas, including, in addition to a gas cylinder and a valve (not shown), a gas chamber 9 connected to the volume of the working chamber 1 by a system of openings in the electrically conductive inner wall of the gas chamber 9 is made of electrical material, for example, ceramic, so that electrically conductive wall 8 is electrically isolated from the working chamber 1 A positive potential is applied to the electrically conductive inner wall 8 from an external power source 10

The device operates as follows. An electron beam formed by electron gun 2 is injected into the working chamber 1 of the trap with magnetic stoppers through a magnetic field of acute angle geometry. An injector 3 (coaxial gun) is injected into the trap of the electron beam by an injector 3 at the same time as the electron beam potential from the power supply source 10 From the gas chamber 9, through the holes in the electrically conductive inner wall 8, gas is introduced into the working chamber 1 As a result, it burns the discharge burning in crossed electric and magnetic fields, while near the electrically conductive inner wall an anode layer forms. The ions injected into the volume of the working chamber 1 from the gyri anode layer have an energy of 2 U (where U is the potential value supplied to the electrically conductive inner wall 8 from an external electric power source 10), create an axial plasma layer having a density that is an order of magnitude higher than near the near-anode layer

The main parts of the device perform the following functions. The anode layer (the region of a strong electric field) injects, focuses and holds high-energy ions. Plasmenim injector 3 serves to compensate for the spatial charge of high-energy ions and to create a target plasma. An electron gun 2 injects an electron beam that interact with plasma

5 0 5

It increases the flux density of high-energy ions from the near-anode layer, restores the loss of electrons from the trap, and contributes to the retention of ions. The gas chamber 9 serves to uniformly introduce the working gas directly into the anode layer

The device allows to obtain and effectively retain high-temperature dense plasma, while it is relatively simple to implement and does not require large investments to realize it.

Claims (1)

Invention Formula 1 A device for receiving and maintaining a high-temperature plasma containing a magnetic system in the form of a magnetic trap with a plug configuration of magnetic field lines, a working chamber with an internal electrically conductive wall located in the region between the magnetic plugs, a plasma injector located coaxially with the magnetic system at the entrance to the working A camera, power supply, characterized in that, in order to increase the density of the high-temperature plasma and its retention efficiency, the internal electrically conductive wall is located and designed in such a way that the magnetic field lines are parallel to the inner electrically conductive wall connected to the positive pole of the power source 2 A device according to claim 1, characterized in that it is additionally equipped with an electron gun mounted at the entrance to the working chamber. 3. A device according to claim 1, characterized in that it is additionally equipped with a system for gas inlet, the gas inlet holes in the chambers being distributed evenly over the electrically conductive inner wall. 4 A device of pop 1, characterized in that the electrically conductive inner wall has a spherical shape with a center lying on the axis of the working chamber t 545 NO t t f CO CO . SL FIG. 6