GB498703A - Improvements in secondary emission electron multipliers - Google Patents

Improvements in secondary emission electron multipliers

Info

Publication number
GB498703A
GB498703A GB2749837A GB2749837A GB498703A GB 498703 A GB498703 A GB 498703A GB 2749837 A GB2749837 A GB 2749837A GB 2749837 A GB2749837 A GB 2749837A GB 498703 A GB498703 A GB 498703A
Authority
GB
United Kingdom
Prior art keywords
cathode
positive
electron multipliers
mica
electrode
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
GB2749837A
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 Electric Co PLC
Original Assignee
General Electric Co PLC
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 Electric Co PLC filed Critical General Electric Co PLC
Priority to GB2749837A priority Critical patent/GB498703A/en
Publication of GB498703A publication Critical patent/GB498703A/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
    • H01J43/18—Electrode arrangements using essentially more than one dynode
    • H01J43/20—Dynodes consisting of sheet material, e.g. plane, bent

Landscapes

  • Conversion Of X-Rays Into Visible Images (AREA)

Abstract

498,703. Electron multipliers. GENERAL ELECTRIC CO., Ltd., and McLEOD, A. E. Oct. 9, 1937, No. 27498. [Class 39 (i)] In a multiplier of the type in which the electron stream is guided from one cathode to the next by the electrostatic fielc of positive "potentia plates" in conjunctior with a perpendicular mag netic field, the potential plate 2 positive to the nth cathode forms a mechanically integral member with the (n+1)th cathode 1, the members being so shaped that they can be assembled in a pile separated by thin insulators such as mica sheets, and held together by insulating supports other than the separating insulation, for example glass rods passing through the holes 8, 9. The primary cathode may be photo-electric, or thermionic with a control grid supported between mica end spacers. The last member before the collecting electrode has only a depending plate 2 and a gauze screen covering the aperture 5. Small tubular resistors are connected to each electrode within the envelope. The portions 7 may act as cooling fins for the cathode. Specification 478,262 is referred to.
GB2749837A 1937-10-09 1937-10-09 Improvements in secondary emission electron multipliers Expired GB498703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2749837A GB498703A (en) 1937-10-09 1937-10-09 Improvements in secondary emission electron multipliers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2749837A GB498703A (en) 1937-10-09 1937-10-09 Improvements in secondary emission electron multipliers

Publications (1)

Publication Number Publication Date
GB498703A true GB498703A (en) 1939-01-12

Family

ID=10260555

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2749837A Expired GB498703A (en) 1937-10-09 1937-10-09 Improvements in secondary emission electron multipliers

Country Status (1)

Country Link
GB (1) GB498703A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436734A (en) * 1941-02-10 1948-02-24 Radio Electronics Ltd Supporting structures for the electrodes of electron discharge devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2436734A (en) * 1941-02-10 1948-02-24 Radio Electronics Ltd Supporting structures for the electrodes of electron discharge devices

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