GB389097A - Improvements in or relating to photoelectric cells - Google Patents

Improvements in or relating to photoelectric cells

Info

Publication number
GB389097A
GB389097A GB2522131A GB2522131A GB389097A GB 389097 A GB389097 A GB 389097A GB 2522131 A GB2522131 A GB 2522131A GB 2522131 A GB2522131 A GB 2522131A GB 389097 A GB389097 A GB 389097A
Authority
GB
United Kingdom
Prior art keywords
rubidium
cathode
envelope
reservoir
heated
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
GB2522131A
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.)
AT&T Corp
Original Assignee
Bell Telephone Laboratories Inc
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 Bell Telephone Laboratories Inc filed Critical Bell Telephone Laboratories Inc
Priority to GB2522131A priority Critical patent/GB389097A/en
Priority to FR726278D priority patent/FR726278A/en
Publication of GB389097A publication Critical patent/GB389097A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes

Landscapes

  • Magnetic Resonance Imaging Apparatus (AREA)
  • Particle Accelerators (AREA)

Abstract

389,097. Photo-electric cells. WESTERN ELECTRIC CO., Ltd., Bush House, Aldwych, London.-(Bell Telephone Laboratories, Inc. ; 463, West Street, New York, U.S.A.) Sept. 8, 1931, No. 25221. [Class 39 (i).] A photo-electric cathode is formed by depositing a layer of black spongy material such as soot, fine-grained carbon, or platinum black on the surface, and depositing material such as rubidium or other alkali metal on the spongy layer. A copper cathode 7, coated with the spongy layer, and an anode 4 are in the form of flat parallel plates. The envelope is evacuated by a system comprising a vacuum pump 20, a mercury vapour pump 21, a McLeod pressure gauge 23, a liquid air trap 24, and an ionization gauge 25, the envelope being heated by windings 26, 27, 28, and the anode heated by electron bombardment from a filament 6 mounted behind it. A pointed weight 16 is raised by a magnet and allowed to drop so as to break a capsule 15 containing a definite amount of rubidium. The container 12 is heated and the rubidium distilled on to the surface of a reservoir 14, the container being sealed off at 13. The rubidium is distilled from the reservoir and deposited on the unheated cathode. Inert gas may be admitted subsequently from a reservoir 22. In a modification the foundation metal of the cathode is deposited on the wall of the envelope. Specification 381,606 is referred to.
GB2522131A 1931-09-08 1931-09-08 Improvements in or relating to photoelectric cells Expired GB389097A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2522131A GB389097A (en) 1931-09-08 1931-09-08 Improvements in or relating to photoelectric cells
FR726278D FR726278A (en) 1931-09-08 1931-11-16 Improvements to photoelectric cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2522131A GB389097A (en) 1931-09-08 1931-09-08 Improvements in or relating to photoelectric cells

Publications (1)

Publication Number Publication Date
GB389097A true GB389097A (en) 1933-03-08

Family

ID=10224165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2522131A Expired GB389097A (en) 1931-09-08 1931-09-08 Improvements in or relating to photoelectric cells

Country Status (2)

Country Link
FR (1) FR726278A (en)
GB (1) GB389097A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755658C (en) * 1934-06-22 1953-08-10 Siemens & Halske A G Device for introducing filler into gas or vapor discharge apparatus
DE742593C (en) * 1939-02-21 1954-03-22 Telefunken Gmbh Process for the production of a cathode showing the external photo effect or the secondary emission effect

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755658C (en) * 1934-06-22 1953-08-10 Siemens & Halske A G Device for introducing filler into gas or vapor discharge apparatus
DE742593C (en) * 1939-02-21 1954-03-22 Telefunken Gmbh Process for the production of a cathode showing the external photo effect or the secondary emission effect

Also Published As

Publication number Publication date
FR726278A (en) 1932-05-26

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