GB930624A - Improved electron emitter - Google Patents

Improved electron emitter

Info

Publication number
GB930624A
GB930624A GB40753/61A GB4075361A GB930624A GB 930624 A GB930624 A GB 930624A GB 40753/61 A GB40753/61 A GB 40753/61A GB 4075361 A GB4075361 A GB 4075361A GB 930624 A GB930624 A GB 930624A
Authority
GB
United Kingdom
Prior art keywords
emitter
carbon
carbide
caesium
nuclear fuel
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
GB40753/61A
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.)
General Dynamics Corp
Original Assignee
General Dynamics Corp
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 General Dynamics Corp filed Critical General Dynamics Corp
Publication of GB930624A publication Critical patent/GB930624A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J45/00—Discharge tubes functioning as thermionic generators
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C3/00—Reactor fuel elements and their assemblies; Selection of substances for use as reactor fuel elements
    • G21C3/40—Structural combination of fuel element with thermoelectric element for direct production of electric energy from fission heat or with another arrangement for direct production of electric energy, e.g. a thermionic device
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D7/00—Arrangements for direct production of electric energy from fusion or fission reactions
    • G21D7/04—Arrangements for direct production of electric energy from fusion or fission reactions using thermoelectric elements or thermoionic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Carbon And Carbon Compounds (AREA)

Abstract

930,624. Thermionic converters; cathode materials; nuclear fuel. GENERAL DYNAMICS CORPORATION. Nov. 14, 1961 [Nov. 15, 1960], No. 40753/61. Classes 39 (1) and 39 (4). A thermionic converter electron emitter is formed by a carbon-containing nuclear fuel body, in which substantially all the carbon is in the bound carbide form. As shown, a thermionic converter cell is supported by ceramic insulator 47 in a fuel element 11 for use in an atomic reactor, and comprises an electron emitter 13 surrounded by a nickel anode 15 which forms part of the cell envelope and is surrounded by stainless steel cooling coils 23. At the emitter operating temperature of 1000‹ to 2000‹ C., the cell contains caesium vapour at a pressure of 10<SP>-6</SP> to 1 mm. of Hg, a caesium pool 25 being provided in copper stem 49. The emitter is zirconium-brazed to a niobium coupling 35 in ceramic insulator 45, and is thereby connected to copper or silver conductor 37 and carbon terminal 39, the anode being connected to copper lead 21. The emitter 13 comprises a nuclear fuel body of uranium carbide with or without zirconium carbide and is substantially free of unbound carbon. Also in the formula UC n , n is less than 1.8 if the emitter comprises UC alone, and less than 1.4 if the emitter includes ZrC, so that caesium corrosion does not readily occur. The emitter may be formed from powdered carbides by hot-pressing techniques employing pressures of 2000 p.s.i. at 1500‹ C. and above, with or without annealing, or by arc melting and casting carbide particles. Specific examples and dimensions are given.
GB40753/61A 1960-11-15 1961-11-14 Improved electron emitter Expired GB930624A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6943660A 1960-11-15 1960-11-15

Publications (1)

Publication Number Publication Date
GB930624A true GB930624A (en) 1963-07-03

Family

ID=22088966

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40753/61A Expired GB930624A (en) 1960-11-15 1961-11-14 Improved electron emitter

Country Status (5)

Country Link
BE (1) BE610394A (en)
CH (1) CH398717A (en)
DE (1) DE1262389B (en)
GB (1) GB930624A (en)
NL (1) NL271383A (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1074687B (en) * 1960-02-04 Siemens &. Halske Aktiengesellschaft, Berlin und München Device for utilizing the thermo-electrical effects with high efficiency

Also Published As

Publication number Publication date
BE610394A (en) 1962-03-16
CH398717A (en) 1966-03-15
DE1262389B (en) 1968-03-07
NL271383A (en)

Similar Documents

Publication Publication Date Title
GB839945A (en) Improvements in x-ray tubes
GB948313A (en) Improvements in fuel elements for nuclear reactors
GB903375A (en) Thermo-electronic converters
GB845804A (en) Improvements in or relating to elements of fissionable material
US3215868A (en) Tiiermionic converter
GB1033363A (en) Fuel cell design
GB930624A (en) Improved electron emitter
GB897499A (en) Improvements in or relating to nuclear reactors
GB1107300A (en) Moderator-nuclear fuel element
GB924095A (en) Nuclear fuel element
GB976814A (en) Improvements in or relating to thermionic apparatus
GB1099331A (en) Method of processing coated nuclear fuels
GB1085383A (en) Improvements in or relating to fuel pencils having a thin flexible can, for nuclear reeactors
ES208641A1 (en) Thermionic cathode
GB835132A (en) Improvements in or relating to fuel elements for nuclear reactors
GB909989A (en) Electron emission current nuclear reactor
GB952200A (en) Nuclear reactors
GB972466A (en) Tubular fuel element for nuclear reactor
US3454797A (en) Thermionic converter
GB917820A (en) Improvements in or relating to nuclear reactors
GB981784A (en) Liquid phase sintering of metallic carbides
GB838442A (en) Improvements relating to neutron-absorbing bodies for use in nuclear reactors
GB1130972A (en) Improvements in or relating to fuel materials for nuclear reactors
GB961004A (en) A thermionic converter
GB830319A (en) Improvements in or relating to velocity-modulated tubes