FR2346939A2 - HF excitation of gas or plasma column - has piston controlling length of rectangular waveguide surrounding gas or plasma column - Google Patents

HF excitation of gas or plasma column - has piston controlling length of rectangular waveguide surrounding gas or plasma column

Info

Publication number
FR2346939A2
FR2346939A2 FR7533425A FR7533425A FR2346939A2 FR 2346939 A2 FR2346939 A2 FR 2346939A2 FR 7533425 A FR7533425 A FR 7533425A FR 7533425 A FR7533425 A FR 7533425A FR 2346939 A2 FR2346939 A2 FR 2346939A2
Authority
FR
France
Prior art keywords
gas
excitation
plasma column
waveguide
rectangular waveguide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7533425A
Other languages
French (fr)
Other versions
FR2346939B2 (en
Inventor
Michel Moisan
Philippe Leprince
Claude Beaudry
Emile Bloyet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7533425A priority Critical patent/FR2346939A2/en
Publication of FR2346939A2 publication Critical patent/FR2346939A2/en
Application granted granted Critical
Publication of FR2346939B2 publication Critical patent/FR2346939B2/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
    • H05H1/00—Generating plasma; Handling plasma
    • H05H1/24—Generating plasma
    • H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy

Abstract

Excitation technique for a column of gas. The excitation power is variable within the two tubes defining the excitation volume, as is the volume between the tubes. The X or S band frequency is chosen such as to maximise the energy dissipated. The control is effected by movement of a piston (136) moving along the length of a rectangular waveguide (130) forming the outer tube through which the plasma tube (2) passes. Power is injected into the waveguide via a transition section (135) at the end remote from the piston. A metal wedge surrounds the entry of the gas column into the waveguide at which point (133) the waveguide walls are thinned to about 0.25 mm to minimise the field.
FR7533425A 1975-10-31 1975-10-31 HF excitation of gas or plasma column - has piston controlling length of rectangular waveguide surrounding gas or plasma column Granted FR2346939A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7533425A FR2346939A2 (en) 1975-10-31 1975-10-31 HF excitation of gas or plasma column - has piston controlling length of rectangular waveguide surrounding gas or plasma column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7533425A FR2346939A2 (en) 1975-10-31 1975-10-31 HF excitation of gas or plasma column - has piston controlling length of rectangular waveguide surrounding gas or plasma column

Publications (2)

Publication Number Publication Date
FR2346939A2 true FR2346939A2 (en) 1977-10-28
FR2346939B2 FR2346939B2 (en) 1979-01-12

Family

ID=9161898

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7533425A Granted FR2346939A2 (en) 1975-10-31 1975-10-31 HF excitation of gas or plasma column - has piston controlling length of rectangular waveguide surrounding gas or plasma column

Country Status (1)

Country Link
FR (1) FR2346939A2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480552A1 (en) * 1980-04-10 1981-10-16 Anvar PLASMA GENERATOR
FR2579855A1 (en) * 1985-03-28 1986-10-03 Centre Nat Rech Scient DEVICE FOR THE EXCITATION BY MICROWAVE WAVES OF A PLASMA IN A GAS COLUMN, ALLOWING IN PARTICULAR THE PRODUCTION OF AN ION LASER
EP0225753A2 (en) * 1985-12-10 1987-06-16 The Regents Of The University Of California Instantaneous and efficient surface wave excitation of a low pressure gas or gases

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2480552A1 (en) * 1980-04-10 1981-10-16 Anvar PLASMA GENERATOR
EP0043740A1 (en) * 1980-04-10 1982-01-13 ANVAR Agence Nationale de Valorisation de la Recherche Plasma generator
FR2579855A1 (en) * 1985-03-28 1986-10-03 Centre Nat Rech Scient DEVICE FOR THE EXCITATION BY MICROWAVE WAVES OF A PLASMA IN A GAS COLUMN, ALLOWING IN PARTICULAR THE PRODUCTION OF AN ION LASER
EP0197843A1 (en) * 1985-03-28 1986-10-15 Centre National De La Recherche Scientifique (Cnrs) Device to excite a plasma in a gas column using microwaves, especially for the production of an ion laser
US4698822A (en) * 1985-03-28 1987-10-06 Centre National De La Recherche Scientifique (C.N.R.S.) Apparatus for exciting a plasma in a column of gas by means of microwaves, in particular for providing an ion laser
EP0225753A2 (en) * 1985-12-10 1987-06-16 The Regents Of The University Of California Instantaneous and efficient surface wave excitation of a low pressure gas or gases
EP0225753A3 (en) * 1985-12-10 1988-11-02 The Regents Of The University Of California Instantaneous and efficient surface wave excitation of a low pressure gas or gases

Also Published As

Publication number Publication date
FR2346939B2 (en) 1979-01-12

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