GB603088A - Improvements in electrical discharge tubes - Google Patents

Improvements in electrical discharge tubes

Info

Publication number
GB603088A
GB603088A GB4087/45A GB408745A GB603088A GB 603088 A GB603088 A GB 603088A GB 4087/45 A GB4087/45 A GB 4087/45A GB 408745 A GB408745 A GB 408745A GB 603088 A GB603088 A GB 603088A
Authority
GB
United Kingdom
Prior art keywords
cathode
anode
crater
distance
spaced
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
GB4087/45A
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.)
Trub Tauber and Co AG
Original Assignee
Trub Tauber and Co AG
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 Trub Tauber and Co AG filed Critical Trub Tauber and Co AG
Publication of GB603088A publication Critical patent/GB603088A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/021—Electron guns using a field emission, photo emission, or secondary emission electron source

Landscapes

  • Discharge Lamp (AREA)

Abstract

603,088. Cathode-ray tubes. TRUB, TAUBER, & CO., AKT.-GES. Feb. 19, 1945, No. 4087. Convention date, Nov. 8, 1943. [Class 39 (i)] A cold-cathode electron beam source comprises a cathode 1 with a central crater of depth t and diameter k spaced from an apertured anode. 2 by a distance d at most equal to the mean free path of molecules, the dimensions being such that t>d and the anode aperture diameter B>d>k. The cathode is mounted in an insulator 4 fitting within the cylindrical part of anode 2 and the radial distance between the cathode and this part of the anode is at most equal to d. A beam defining electrode 7 is spaced a distance from anode 2 which is not less than B. It is stated that the discharge does not penetrate to the bottom of the crater, so that the source of electrons is virtually the glowing mass of gas within the crater and difficulties of cathode disintegration are avoided.
GB4087/45A 1943-11-08 1945-02-19 Improvements in electrical discharge tubes Expired GB603088A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH603088X 1943-11-08

Publications (1)

Publication Number Publication Date
GB603088A true GB603088A (en) 1948-06-09

Family

ID=4522865

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4087/45A Expired GB603088A (en) 1943-11-08 1945-02-19 Improvements in electrical discharge tubes

Country Status (4)

Country Link
CH (1) CH240060A (en)
FR (1) FR933439A (en)
GB (1) GB603088A (en)
NL (1) NL67662C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146383A2 (en) * 1983-12-20 1985-06-26 Eev Limited Apparatus for forming electron beams
GB2153140A (en) * 1983-12-20 1985-08-14 English Electric Valve Co Ltd Apparatus for forming electron beams
CN116190178A (en) * 2023-04-20 2023-05-30 能量奇点能源科技(上海)有限公司 Cold cathode electron gun

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH348753A (en) * 1957-01-31 1960-09-15 Trueb Taeuber & Co Ag Cold cathode beam generation system for electron beam machines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0146383A2 (en) * 1983-12-20 1985-06-26 Eev Limited Apparatus for forming electron beams
GB2153140A (en) * 1983-12-20 1985-08-14 English Electric Valve Co Ltd Apparatus for forming electron beams
EP0146383A3 (en) * 1983-12-20 1987-04-01 English Electric Valve Company Limited Apparatus for forming electron beams
US4698546A (en) * 1983-12-20 1987-10-06 English Electric Valve Company Limited Apparatus for forming electron beams
CN116190178A (en) * 2023-04-20 2023-05-30 能量奇点能源科技(上海)有限公司 Cold cathode electron gun
CN116190178B (en) * 2023-04-20 2023-06-23 能量奇点能源科技(上海)有限公司 Cold cathode electron gun

Also Published As

Publication number Publication date
FR933439A (en) 1948-04-20
NL67662C (en)
CH240060A (en) 1945-11-30

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