FR2284185A1 - Alkali metal-antimony electro-optical emission layer - for X-ray intensifier with low antimony content, giving high quantum yield - Google Patents

Alkali metal-antimony electro-optical emission layer - for X-ray intensifier with low antimony content, giving high quantum yield

Info

Publication number
FR2284185A1
FR2284185A1 FR7526767A FR7526767A FR2284185A1 FR 2284185 A1 FR2284185 A1 FR 2284185A1 FR 7526767 A FR7526767 A FR 7526767A FR 7526767 A FR7526767 A FR 7526767A FR 2284185 A1 FR2284185 A1 FR 2284185A1
Authority
FR
France
Prior art keywords
emission layer
alkali metal
layer
antimony
electro
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.)
Granted
Application number
FR7526767A
Other languages
French (fr)
Other versions
FR2284185B1 (en
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of FR2284185A1 publication Critical patent/FR2284185A1/en
Application granted granted Critical
Publication of FR2284185B1 publication Critical patent/FR2284185B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H01J29/385—Photocathodes comprising a layer which modified the wave length of impinging radiation

Abstract

An electro-optical emission layer of an alkali metal-Sb cpd. (I), at which electrons are detached by light and which is applied to a surface with almost) th same crystal structure contains =2, esp. ca 1 mu g Sb/cm2. The matl. pref. consists of a CsI support and a SbCs3 emission layer. The CsI pref. is applied to a stable support in a thickness such that it forms an interference cathode with the SbCs3 layer. The matl. is used in an X-ray image intensifier with an input screen of a Na-activated CaI phosphor layer combined with a photocathode layer, sepd. by a Na-free layer of an alkali metal, esp. Cs. The thickness of the emission layer can be reduced to 10nm and it gives a higher quantum yield than the usual Sb layers of 3 mu g/cm2. Five times as many photoelectrons are emitted per incident amt. of radiation and surface area of the element.
FR7526767A 1974-09-05 1975-09-01 Alkali metal-antimony electro-optical emission layer - for X-ray intensifier with low antimony content, giving high quantum yield Granted FR2284185A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742442491 DE2442491C3 (en) 1974-09-05 1974-09-05 Input screen for an X-ray image intensifier tube

Publications (2)

Publication Number Publication Date
FR2284185A1 true FR2284185A1 (en) 1976-04-02
FR2284185B1 FR2284185B1 (en) 1978-04-07

Family

ID=5924934

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7526767A Granted FR2284185A1 (en) 1974-09-05 1975-09-01 Alkali metal-antimony electro-optical emission layer - for X-ray intensifier with low antimony content, giving high quantum yield

Country Status (2)

Country Link
DE (1) DE2442491C3 (en)
FR (1) FR2284185A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371060A1 (en) * 1976-11-12 1978-06-09 Diagnostic Inform X-RAY IMAGE INTENSIFIER TUBE, AND RADIOGRAPHIC CAMERA INCLUDING THIS TUBE
FR2379157A1 (en) * 1977-01-28 1978-08-25 Diagnostic Inform RADIOSCOPY IMAGE ENHANCER TUBE
EP0033894B1 (en) * 1980-02-06 1984-05-30 Siemens Aktiengesellschaft Plural-stage vacuum x-ray image amplifier
EP0283020A2 (en) * 1987-03-18 1988-09-21 Kabushiki Kaisha Toshiba Photocathode and method of manufacturing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4319596C2 (en) * 1993-06-14 1996-05-02 Siemens Ag Entry screen of an X-ray image intensifier

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023447A1 (en) * 1968-11-15 1970-08-21 Varian Associates
FR2186723A1 (en) * 1972-05-30 1974-01-11 Gen Electric

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2023447A1 (en) * 1968-11-15 1970-08-21 Varian Associates
FR2186723A1 (en) * 1972-05-30 1974-01-11 Gen Electric

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2371060A1 (en) * 1976-11-12 1978-06-09 Diagnostic Inform X-RAY IMAGE INTENSIFIER TUBE, AND RADIOGRAPHIC CAMERA INCLUDING THIS TUBE
FR2379157A1 (en) * 1977-01-28 1978-08-25 Diagnostic Inform RADIOSCOPY IMAGE ENHANCER TUBE
EP0033894B1 (en) * 1980-02-06 1984-05-30 Siemens Aktiengesellschaft Plural-stage vacuum x-ray image amplifier
EP0283020A2 (en) * 1987-03-18 1988-09-21 Kabushiki Kaisha Toshiba Photocathode and method of manufacturing the same
EP0283020A3 (en) * 1987-03-18 1989-03-22 Kabushiki Kaisha Toshiba Photocathode and method of manufacturing the same
US4950952A (en) * 1987-03-18 1990-08-21 Kabushiki Kaisha Toshiba Photocathode and method of manufacturing the same

Also Published As

Publication number Publication date
DE2442491B2 (en) 1979-03-08
FR2284185B1 (en) 1978-04-07
DE2442491C3 (en) 1979-10-25
DE2442491A1 (en) 1976-03-25

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Legal Events

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