GB1442998A - Field emission ion sources - Google Patents

Field emission ion sources

Info

Publication number
GB1442998A
GB1442998A GB365573A GB365573A GB1442998A GB 1442998 A GB1442998 A GB 1442998A GB 365573 A GB365573 A GB 365573A GB 365573 A GB365573 A GB 365573A GB 1442998 A GB1442998 A GB 1442998A
Authority
GB
United Kingdom
Prior art keywords
field emission
emission ion
ion sources
source material
jan
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.)
Expired
Application number
GB365573A
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB365573A priority Critical patent/GB1442998A/en
Publication of GB1442998A publication Critical patent/GB1442998A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F03H1/0037—Electrostatic ion thrusters
    • F03H1/005—Electrostatic ion thrusters using field emission, e.g. Field Emission Electric Propulsion [FEEP]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J27/00—Ion beam tubes
    • H01J27/02—Ion sources; Ion guns
    • H01J27/26—Ion sources; Ion guns using surface ionisation, e.g. field effect ion sources, thermionic ion sources
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
    • H01J37/08—Ion sources; Ion guns

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

1442998 Field emission ion sources UNITED KINGDOM ATOMIC ENERGY AUTHORITY 23 Jan 1974 [24 Jan 1973] 3655/73 Heading H1D A field emission ion source comprises an array of emitting pointers 2, a reservoir for a liquid source material, which can be an alkali metal, e.g. casium, such as an absorbent metal disc 26 impregnated with the material, and a plurality of capillary feed channels, in this case formed by the interstices between wires 3, for supplying the source material to the points. In another form a razor blade is etched to provide both the points and the channels. Heating means may be provided to maintain the source material in a liquid state. The ion source may be used in space propulsion.
GB365573A 1973-01-24 1973-01-24 Field emission ion sources Expired GB1442998A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB365573A GB1442998A (en) 1973-01-24 1973-01-24 Field emission ion sources

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB365573A GB1442998A (en) 1973-01-24 1973-01-24 Field emission ion sources

Publications (1)

Publication Number Publication Date
GB1442998A true GB1442998A (en) 1976-07-21

Family

ID=9762428

Family Applications (1)

Application Number Title Priority Date Filing Date
GB365573A Expired GB1442998A (en) 1973-01-24 1973-01-24 Field emission ion sources

Country Status (1)

Country Link
GB (1) GB1442998A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348562A1 (en) * 1976-04-13 1977-11-10 Atomic Energy Authority Uk ION SOURCE
US4156814A (en) * 1977-06-24 1979-05-29 University Of Virginia Apparatus for producing ions of thermally labile or nonvolatile solids
EP0087896A1 (en) * 1982-02-22 1983-09-07 United Kingdom Atomic Energy Authority Liquid metal ion sources
US4888482A (en) * 1987-03-30 1989-12-19 Hitachi, Ltd. Atmospheric pressure ionization mass spectrometer
US6627233B1 (en) 1997-09-18 2003-09-30 Wm. Wrigley Jr. Company Chewing gum containing physiological cooling agents
EP1935252A1 (en) 1997-09-18 2008-06-25 WM. Wrigley Jr., Company Chewing gum composition
EP2478777A1 (en) 2005-12-23 2012-07-25 Kraft Foods Global Brands LLC Composition providing a cooling sensation substantially similar to that provided by menthol
EP2559424A1 (en) 2005-10-05 2013-02-20 Kraft Foods Global Brands LLC Cooling composition comprising trimethyl isopropyl butanamide

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2348562A1 (en) * 1976-04-13 1977-11-10 Atomic Energy Authority Uk ION SOURCE
US4156814A (en) * 1977-06-24 1979-05-29 University Of Virginia Apparatus for producing ions of thermally labile or nonvolatile solids
EP0087896A1 (en) * 1982-02-22 1983-09-07 United Kingdom Atomic Energy Authority Liquid metal ion sources
US4577135A (en) * 1982-02-22 1986-03-18 United Kingdom Atomic Energy Authority Liquid metal ion sources
US4888482A (en) * 1987-03-30 1989-12-19 Hitachi, Ltd. Atmospheric pressure ionization mass spectrometer
US6627233B1 (en) 1997-09-18 2003-09-30 Wm. Wrigley Jr. Company Chewing gum containing physiological cooling agents
EP1935252A1 (en) 1997-09-18 2008-06-25 WM. Wrigley Jr., Company Chewing gum composition
EP2559424A1 (en) 2005-10-05 2013-02-20 Kraft Foods Global Brands LLC Cooling composition comprising trimethyl isopropyl butanamide
EP2478777A1 (en) 2005-12-23 2012-07-25 Kraft Foods Global Brands LLC Composition providing a cooling sensation substantially similar to that provided by menthol

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee