ADAPTER SHAPING ELECTROMAGNETIC FIELD, WHICH HEATS TOROIDAL PLASMA DISCHARGE AT MICROWAVE FREQUENCY

Abstract

The adapter shaping an electromagnetic field heats toroidal plasma discharge. It is intended for use in plasma torches dedicated for excitation/ionization sources in spectrometers. The adapter includes at least two electromagnetic field shaping elements, which are stretched between the bushing of the upper microwave connection and the bushing of the lower microwave connection. An element shaping electromagnetic field is positioned to the surface pitch of the bushings at an angle ranging from 0 to 90 degrees.

Claims

1. An adapter shaping microwave electromagnetic field so as to heat a toroidal plasma discharge, comprising: at least two electromagnetic field forming elements, which are stretched between the upper bushing of microwave connection and the lower bushing of microwave connection, wherein an element shaping electromagnetic field is positioned to a surface pitch generator of the bushing at an angle ranging from 0 to 90 degrees.

2. The adapter of claim 1, wherein the lower bushing of microwave connection is comprised of a cylindrical external connection.

3. The adapter of claim 1, wherein the upper bushing connection of microwave frequency is fixedly connected to the lower bushing of microwave connection by field shaping elements (1) having the form of mutually parallel and electrically conductive rods.

4. The adapter of claim 3, wherein a rod is bent in the shape of a spiral section.

5. The adapter of claim 1, wherein the upper bushing connection of microwave frequency is connected fixedly to the lower bushing connection of microwaves by field shaping elements being comprised of ring washers mutually parallel and separated by dielectric spacers.

6. The adapter of claim 1, wherein the electromagnetic field shaping elements, mounted and stretched between the upper bushing connection of microwaves and the lower bushing connection of microwaves are formed from a tube and curved, using the technique of cutting the field shaping elements.

7. The adapter of claim 1, wherein the elements shaping the electromagnetic field stretched between the upper bushing connection of microwaves and the lower bushing connection of microwaves, as well as the bushings are fabricated on the surface of the dielectric cylinder as a metal layer by applying the technique of metallization.

8. The adapter of claim 1, wherein vertical slots are fabricated in the bushes between the field shaping elements.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

[0020] The invention is illustrated by figures.

[0021] FIG. 1 is a schematic view of an adapter with four vertical electromagnetic field-forming elements made of electric conductive rods (wires).

[0022] FIG. 2 is a schematic view of an adapter with EM field-forming elements consisting of six sections of spirals.

[0023] FIG. 3 is a schematic view of an adapter with oblique electromagnetic field-forming elements consisting of four spiral components formed by cutting or applying metal cladding on a dielectric cylinder (metallization).

[0024] FIG. 4 is a schematic view of an adapter with electromagnetic field-forming elements in the shape of mutually parallel rings (washers), separated by dielectric spacers.

[0025] FIG. 5 is a schematic view of an adapter with electromagnetic field-forming elements in the shape of mutually parallel rings (washers), separated by dielectric spacers.

[0026] FIG. 6 is a schematic view of an adapter with electromagnetic field-forming elements of the electromagnetic field shaping comprising of spiral components perpendicular to the pitch surface generation of the bushing.

DETAILED DESCRIPTION OF THE INVENTION

Example 1

[0027] An adapter for shaping microwave electromagnetic field heating toroidal plasma discharge features four mounted magnetic field-forming elements 1 between the bushing 2 and the lower microwave connector 3. The four elements are positioned at an angle of 0 degrees to the bushing surface pitch generator 2, 3. In this embodiment, the electromagnetic field-forming elements 1 appear as mutually parallel electrical conductive rods (wires).

Example 2

[0028] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1, except here the magnetic field-forming elements are six sections of helices, inclined relatively to the pitch surface generator of the bushing 2, 3.

Example 3

[0029] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1, but here the magnetic field forming elements consist of 6 parallel washers arranged at an angle of 90 degrees to the pitch surface generator of the bushing 2, 3.

Example 4

[0030] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1 or Example 2, but here, the lower bushing of microwave connection 3 is equipped with an external flat connector 4, which positions the adapter within the microwave cavity.

Example 5

[0031] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1 or Example 2, but the field shaping elements 1 stretched between the upper bushing of microwave connection 2 and the lower bushing of microwave connector 3 are made from a tube, where the electromagnetic field forming elements 1 are curved through milling. In addition, between the elements shaping the electromagnetic field 1, vertical cutouts 7 are made in the bushings 2, 3.

Example 6

[0032] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1 or Example 2, but the elements forming the electromagnetic field 1 between the bushing upper connection of the microwaves 2 and the bushing lower connection of microwaves 3 are applied through metallization i.e. applying the metal form immediately to the surface of the dielectric cylinder.

Example 7

[0033] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1 or Example 2. However, in the bushings 2, 3 between the field forming elements, vertical cuts 7 are made.

Example 8

[0034] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 1 or Example 2, except that the upper bushing of the microwave connection 2 is permanently connected to the lower bushing connection of the microwave connection 3 by means of electromagnetic field forming elements 1 appearing in the shape of mutually parallel rings (washers) 8, with dielectric spacers 9 between them, where the diameters of the ring washer 8 and the spacer dielectric spacers 9 are equal.

Example 9

[0035] An adapter shaping microwave electromagnetic field heating toroidal plasma discharge performs as in Example 8, except that the diameters of the ring washers 8 are larger than those of the dielectric spacers 9.

[0036] List of references in figures: [0037] 1. field forming element, [0038] 2. bushing of upper microwave connection, [0039] 3. bushing of lower microwave connection, [0040] 4. external flat connection, [0041] 5. isolator layer, [0042] 6. microwave cavity, [0043] 7. the cut, [0044] 8. ring washer, [0045] 9. dielectric spacer distance washer.