JPS5242591B2 - - Google Patents

Info

Publication number
JPS5242591B2
JPS5242591B2 JP12250272A JP12250272A JPS5242591B2 JP S5242591 B2 JPS5242591 B2 JP S5242591B2 JP 12250272 A JP12250272 A JP 12250272A JP 12250272 A JP12250272 A JP 12250272A JP S5242591 B2 JPS5242591 B2 JP S5242591B2
Authority
JP
Japan
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
JP12250272A
Other languages
Japanese (ja)
Other versions
JPS4979768A (enrdf_load_stackoverflow
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 filed Critical
Priority to JP12250272A priority Critical patent/JPS5242591B2/ja
Priority to US423107A priority patent/US3928783A/en
Publication of JPS4979768A publication Critical patent/JPS4979768A/ja
Publication of JPS5242591B2 publication Critical patent/JPS5242591B2/ja
Expired legal-status Critical Current

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
    • H01J1/13—Solid thermionic cathodes
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Landscapes

  • Solid Thermionic Cathode (AREA)
JP12250272A 1972-12-08 1972-12-08 Expired JPS5242591B2 (enrdf_load_stackoverflow)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12250272A JPS5242591B2 (enrdf_load_stackoverflow) 1972-12-08 1972-12-08
US423107A US3928783A (en) 1972-12-08 1973-12-10 Thermionic cathode heated by electron bombardment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12250272A JPS5242591B2 (enrdf_load_stackoverflow) 1972-12-08 1972-12-08

Publications (2)

Publication Number Publication Date
JPS4979768A JPS4979768A (enrdf_load_stackoverflow) 1974-08-01
JPS5242591B2 true JPS5242591B2 (enrdf_load_stackoverflow) 1977-10-25

Family

ID=14837418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12250272A Expired JPS5242591B2 (enrdf_load_stackoverflow) 1972-12-08 1972-12-08

Country Status (2)

Country Link
US (1) US3928783A (enrdf_load_stackoverflow)
JP (1) JPS5242591B2 (enrdf_load_stackoverflow)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49127562A (enrdf_load_stackoverflow) * 1973-04-06 1974-12-06
US4055780A (en) * 1975-04-10 1977-10-25 National Institute For Researches In Inorganic Materials Thermionic emission cathode having a tip of a single crystal of lanthanum hexaboride
US4054946A (en) * 1976-09-28 1977-10-18 Bell Telephone Laboratories, Incorporated Electron source of a single crystal of lanthanum hexaboride emitting surface of (110) crystal plane
US4115720A (en) * 1977-03-31 1978-09-19 Rca Corporation Device having thermionic cathode heated by field-emitted electrons
US4137476A (en) * 1977-05-18 1979-01-30 Denki Kagaku Kogyo Kabushiki Kaisha Thermionic cathode
US4258283A (en) * 1978-08-31 1981-03-24 Balzers Aktiengesellschaft Fur Hochvakuumtechnik Und Dunne Schichten Cathode for electron emission
US4297615A (en) * 1979-03-19 1981-10-27 The Regents Of The University Of California High current density cathode structure
US4333035A (en) * 1979-05-01 1982-06-01 Woodland International Corporation Areal array of tubular electron sources
US4438557A (en) * 1979-05-01 1984-03-27 Woodland International Corporation Method of using an areal array of tubular electron sources
US4288717A (en) * 1979-11-06 1981-09-08 Denki Kagaku Kogyo Kabushiki Kaisha Thermionic cathode apparatus
JPS58225537A (ja) * 1982-06-25 1983-12-27 Hitachi Ltd イオン源装置
JP2000011853A (ja) * 1998-06-24 2000-01-14 Advantest Corp 電子銃、その長寿命化方法、電子機器
NL2014030B1 (en) 2013-12-30 2016-01-08 Mapper Lithography Ip Bv Cathode arrangement, electron gun, and lithograpy system comprising such electron gun.
KR20200127025A (ko) * 2018-03-09 2020-11-09 아토나프 가부시키가이샤 이오나이저를 포함하는 디바이스
WO2019180242A1 (en) * 2018-03-23 2019-09-26 Freemelt Ab Cathode assembly for electron gun
US11094493B2 (en) * 2019-08-01 2021-08-17 Lockheed Martin Corporation Emitter structures for enhanced thermionic emission
US11380511B2 (en) * 2020-03-24 2022-07-05 Fei Company Charged particle beam source
CN119008352A (zh) * 2024-10-22 2024-11-22 中国人民解放军空军工程大学 一种电子枪阴极的电子轰击加热装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1210678A (en) * 1915-05-19 1917-01-02 Western Electric Co Thermionic amplifier.
US2159824A (en) * 1936-12-01 1939-05-23 Hans J Spanner Discharge device
US2386790A (en) * 1944-11-29 1945-10-16 Sylvania Electric Prod Electron gun and the like
US2585582A (en) * 1949-07-07 1952-02-12 Bell Telephone Labor Inc Electron gun
US2561768A (en) * 1950-04-10 1951-07-24 Zenith Radio Corp Thermionic cathode activation
US3333138A (en) * 1965-01-11 1967-07-25 Rauland Corp Support assembly for a low-wattage cathode
US3369145A (en) * 1965-04-09 1968-02-13 Wagner Electric Corp Thermionic emissive cathode
DE1251876B (enrdf_load_stackoverflow) * 1965-12-23
US3440475A (en) * 1967-04-11 1969-04-22 Lokomotivbau Elektrotech Lanthanum hexaboride cathode system for an electron beam generator
US3621324A (en) * 1968-11-05 1971-11-16 Westinghouse Electric Corp High-power cathode
US3727093A (en) * 1971-01-20 1973-04-10 Westinghouse Electric Corp Electron beam apparatus

Also Published As

Publication number Publication date
JPS4979768A (enrdf_load_stackoverflow) 1974-08-01
US3928783A (en) 1975-12-23

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