WO2008035053A3 - émetteur pour une cathode de distribution thermo-ionique, son procédé de fabrication et dispositif thermo-ionique le comprenant - Google Patents

émetteur pour une cathode de distribution thermo-ionique, son procédé de fabrication et dispositif thermo-ionique le comprenant Download PDF

Info

Publication number
WO2008035053A3
WO2008035053A3 PCT/GB2007/003529 GB2007003529W WO2008035053A3 WO 2008035053 A3 WO2008035053 A3 WO 2008035053A3 GB 2007003529 W GB2007003529 W GB 2007003529W WO 2008035053 A3 WO2008035053 A3 WO 2008035053A3
Authority
WO
WIPO (PCT)
Prior art keywords
thermionic
emitter
manufacturing
dispenser cathode
emission surface
Prior art date
Application number
PCT/GB2007/003529
Other languages
English (en)
Other versions
WO2008035053A2 (fr
Inventor
Angelo Niko Grubisic
Original Assignee
Univ Surrey
Angelo Niko Grubisic
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 Univ Surrey, Angelo Niko Grubisic filed Critical Univ Surrey
Publication of WO2008035053A2 publication Critical patent/WO2008035053A2/fr
Publication of WO2008035053A3 publication Critical patent/WO2008035053A3/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/025—Hollow cathodes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/40—Arrangements or adaptations of propulsion systems
    • B64G1/402—Propellant tanks; Feeding propellants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/40—Arrangements or adaptations of propulsion systems
    • B64G1/405—Ion or plasma engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
    • B64G1/00—Cosmonautic vehicles
    • B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
    • B64G1/40—Arrangements or adaptations of propulsion systems
    • B64G1/411—Electric propulsion
    • B64G1/415—Arcjets or resistojets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03H—PRODUCING A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03H1/00—Using plasma to produce a reactive propulsive thrust
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part
    • H01J9/047—Cathodes having impregnated bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Remote Sensing (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Plasma Technology (AREA)
  • Cold Cathode And The Manufacture (AREA)

Abstract

La présente invention concerne un procédé de fabrication d'un émetteur (8 ; 10) pour une cathode de distribution thermo-ionique, qui comprend la formation d'un corps d'émetteur poreux ayant des pores sensiblement interconnectés, présentant une surface d'émission (11 ; 16) à partir de laquelle, lors de l'application de chaleur, des électrons sont émis. Ledit corps est adapté pour transporter, à travers lesdits pores, un composé libéré lors de l'application de la chaleur, vers la surface d'émission (11 ; 16). Ce composé, lorsqu'il est déposé sur la surface d'émission (11 ; 16), permet de réduire un travail d'extraction efficace de l'émetteur (8 ; 10). Ledit corps est formé au moyen d'un procédé de dépôt de matériau. Au moins une région dudit corps est dotée d'une porosité variable de façon continue qui est modifiée par le contrôle d'au moins un paramètre du procédé de dépôt.
PCT/GB2007/003529 2006-09-19 2007-09-18 émetteur pour une cathode de distribution thermo-ionique, son procédé de fabrication et dispositif thermo-ionique le comprenant WO2008035053A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0618411.3A GB0618411D0 (en) 2006-09-19 2006-09-19 Thermo-electric propulsion device, method of operating a thermo-electric propulsion device and spacecraft
GB0618411.3 2006-09-19

Publications (2)

Publication Number Publication Date
WO2008035053A2 WO2008035053A2 (fr) 2008-03-27
WO2008035053A3 true WO2008035053A3 (fr) 2008-05-29

Family

ID=37421225

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2007/003529 WO2008035053A2 (fr) 2006-09-19 2007-09-18 émetteur pour une cathode de distribution thermo-ionique, son procédé de fabrication et dispositif thermo-ionique le comprenant

Country Status (2)

Country Link
GB (1) GB0618411D0 (fr)
WO (1) WO2008035053A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3024436B1 (fr) * 2014-07-30 2018-01-05 Safran Aircraft Engines Systeme et procede de propulsion spatiale

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920007416B1 (ko) * 1990-09-07 1992-08-31 삼성전관 주식회사 디스펜서 음극 구조체의 제조방법
JPH05251044A (ja) * 1992-03-04 1993-09-28 Toshiba Lighting & Technol Corp 冷陰極放電灯
EP0915492A1 (fr) * 1997-11-04 1999-05-12 Sony Corporation Cathode imprégnée et procédé pour sa fabrication ,canon - et tube à électrons
US6304024B1 (en) * 1995-06-09 2001-10-16 Kabushiki Kaisha Toshiba Impregnated-type cathode substrate with large particle diameter low porosity region and small particle diameter high porosity region
US6306003B1 (en) * 1997-07-09 2001-10-23 Matsushita Electric Industrial Co., Ltd. Impregnated cathode and method for manufacturing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920007416B1 (ko) * 1990-09-07 1992-08-31 삼성전관 주식회사 디스펜서 음극 구조체의 제조방법
JPH05251044A (ja) * 1992-03-04 1993-09-28 Toshiba Lighting & Technol Corp 冷陰極放電灯
US6304024B1 (en) * 1995-06-09 2001-10-16 Kabushiki Kaisha Toshiba Impregnated-type cathode substrate with large particle diameter low porosity region and small particle diameter high porosity region
US6306003B1 (en) * 1997-07-09 2001-10-23 Matsushita Electric Industrial Co., Ltd. Impregnated cathode and method for manufacturing the same
EP0915492A1 (fr) * 1997-11-04 1999-05-12 Sony Corporation Cathode imprégnée et procédé pour sa fabrication ,canon - et tube à électrons

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CH. CARPENTER, M. PATTERSON: "High-Current Hollow Cathode Development", 27TH INTERNATIONAL ELECTRIC PROPULSION CONFERENCE, no. IEPC-01-274, October 2001 (2001-10-01) - October 2001 (2001-10-01), Pasadena, CA, XP002460481 *
DATABASE WPI Week 1993, Derwent World Patents Index; AN 1993-255766, XP002461607, "Dispense cathode manufacture useful braun tube ..." *

Also Published As

Publication number Publication date
GB0618411D0 (en) 2006-11-01
WO2008035053A2 (fr) 2008-03-27

Similar Documents

Publication Publication Date Title
WO2004005193A3 (fr) Procedes de fabrication et d'activation de cathodes a emission de champ composites a nanostructure
WO2008133483A3 (fr) Dispositif organique électroluminescent et son procédé de production
JP4481240B2 (ja) マスクフレームおよびマスクの固定方法
WO2006096052A3 (fr) Microsource de rayons x
WO2007035178A3 (fr) Emission de champ electronique amelioree a partir de nanotubes de carbone sans activation
EP1748504A3 (fr) Dispositif organique électroluminescent et sa méthode de fabrication
EP2012375A3 (fr) Dispositif électroluminescent organique
WO2003007394A8 (fr) Dispositif electroluminescent organique fonde sur l'emission d'exciplexes ou d'electroplexes et procede de fabrication
WO2006086040A3 (fr) Dispositif optoelectronique photosensible organique comportant une couche a base de phenanthroline de blocage d'excitons
WO2005113704A3 (fr) Composes luminescents a ligands carbene
WO2004059027A3 (fr) Revetement par depot de plasma de surfaces antimicrobiennes et surfaces antimicrobiennes obtenues
CA2351037A1 (fr) Tube electronique sous vide a micro-ondes utilisant une source a cathode froide modulee par la grille, qui est munie d'emetteurs a nanotubes
WO2005026409A3 (fr) Appareil a plasma thermique detendu a plaque interchangeable et procede
EP1986249A3 (fr) Dispositif électroluminescent organique et son procédé de fabrication
TW200712230A (en) Evaporation source machine and vacuum deposition apparatus using the same
WO2008010915A3 (fr) Dispositif électroluminescent contenant un complexe phosphorescent
WO2006002138A3 (fr) Controle de mordançage et de depot pour l'implantation de plasma
EP1433873A3 (fr) Cruset chauffant et appareillage de déposition l'utilisant
TW200733804A (en) Organic electroluminescent device
EP1333465A3 (fr) Dispositif d'affichage à émission de champ et procédé de fabrication
WO2008060671A3 (fr) Tube à rayons x comportant une anode de transmission
EP1617450A3 (fr) Emetteur électronique
EP1594151A3 (fr) Procédé de fabrication d'un dispositif d'émission de champ à nanotubes de carbone
TW200634901A (en) A method for fabricating a low dielectric layer
WO2007146956A3 (fr) Substrat hydrophilisé et procédé d'hydrophilisation de la surface hydrophobe d'un substrat

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07804314

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07804314

Country of ref document: EP

Kind code of ref document: A2