FR971493A - Photoelectric cell with several secondary emission stages - Google Patents

Photoelectric cell with several secondary emission stages

Info

Publication number
FR971493A
FR971493A FR971493DA FR971493A FR 971493 A FR971493 A FR 971493A FR 971493D A FR971493D A FR 971493DA FR 971493 A FR971493 A FR 971493A
Authority
FR
France
Prior art keywords
photoelectric cell
secondary emission
several secondary
emission stages
stages
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
Other languages
French (fr)
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.)
IND DE E C GRAMMONT ET ALEXAND
Original Assignee
IND DE E C GRAMMONT ET ALEXAND
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 IND DE E C GRAMMONT ET ALEXAND filed Critical IND DE E C GRAMMONT ET ALEXAND
Application granted granted Critical
Publication of FR971493A publication Critical patent/FR971493A/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
    • H01J43/22—Dynodes consisting of electron-permeable material, e.g. foil, grid, tube, venetian blind
FR971493D 1940-07-03 1940-07-03 Photoelectric cell with several secondary emission stages Expired FR971493A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR971493T 1940-07-03

Publications (1)

Publication Number Publication Date
FR971493A true FR971493A (en) 1951-01-17

Family

ID=9513876

Family Applications (1)

Application Number Title Priority Date Filing Date
FR971493D Expired FR971493A (en) 1940-07-03 1940-07-03 Photoelectric cell with several secondary emission stages

Country Status (1)

Country Link
FR (1) FR971493A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515872A (en) * 1966-02-08 1970-06-02 Philips Corp Photomultiplier with inwardly convex photocathode for low-level scintillation counting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515872A (en) * 1966-02-08 1970-06-02 Philips Corp Photomultiplier with inwardly convex photocathode for low-level scintillation counting

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