GB533732A - Electron discharge devices employing secondary electron emission - Google Patents

Electron discharge devices employing secondary electron emission

Info

Publication number
GB533732A
GB533732A GB3027839A GB3027839A GB533732A GB 533732 A GB533732 A GB 533732A GB 3027839 A GB3027839 A GB 3027839A GB 3027839 A GB3027839 A GB 3027839A GB 533732 A GB533732 A GB 533732A
Authority
GB
United Kingdom
Prior art keywords
electrode
primaries
collector
emitting
secondaries
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
GB3027839A
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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
Priority to FR853760D priority Critical patent/FR853760A/fr
Application filed by Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Priority to GB3027839A priority patent/GB533732A/en
Publication of GB533732A publication Critical patent/GB533732A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/06—Electrode arrangements
    • H01J43/10—Dynodes

Landscapes

  • Particle Accelerators (AREA)
  • X-Ray Techniques (AREA)

Abstract

533,732. Electron multipliers. STANDARD TELEPHONES & CABLES, Ltd. (Materiel Telephonique Soc. Anon.). Nov. 17, 1939, No. 30278. [Class 39 (i)] A secondary emitting electrode 2 is heated by a filament 3 so as to emit thermionically these thermionic primary electrons being separated from the secondary electrons obtained by impact of a primary beam 1. The separation is effected (i) by a grid 6 at about the potential of the electrode 2 which collects the primaries and allows the secondaries to pass to a collector 7 or to further secondary emitting electrodes ; the collector electrode and grid may be cylindrical, (ii) by electro-static deflector plates 8, Fig. 3, which deflect the slow moving primaries more than the secondaries these going to a collector 11, or (iii) by electromagnetic deflector, the field being strong enough to turn the primaries on to the emitting or some other electrode.
GB3027839A 1939-11-17 1939-11-17 Electron discharge devices employing secondary electron emission Expired GB533732A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR853760D FR853760A (en) 1939-11-17
GB3027839A GB533732A (en) 1939-11-17 1939-11-17 Electron discharge devices employing secondary electron emission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3027839A GB533732A (en) 1939-11-17 1939-11-17 Electron discharge devices employing secondary electron emission

Publications (1)

Publication Number Publication Date
GB533732A true GB533732A (en) 1941-02-19

Family

ID=10305112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3027839A Expired GB533732A (en) 1939-11-17 1939-11-17 Electron discharge devices employing secondary electron emission

Country Status (2)

Country Link
FR (1) FR853760A (en)
GB (1) GB533732A (en)

Also Published As

Publication number Publication date
FR853760A (en) 1940-03-28

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