GB884053A - Improvements in or relating to dynodes for use in electron discharge tubes and methods of making same - Google Patents
Improvements in or relating to dynodes for use in electron discharge tubes and methods of making sameInfo
- Publication number
- GB884053A GB884053A GB35850/59A GB3585059A GB884053A GB 884053 A GB884053 A GB 884053A GB 35850/59 A GB35850/59 A GB 35850/59A GB 3585059 A GB3585059 A GB 3585059A GB 884053 A GB884053 A GB 884053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- frame
- electron
- dynodes
- emissive material
- 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
Links
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 abstract 1
- 229910001508 alkali metal halide Inorganic materials 0.000 abstract 1
- 150000008045 alkali metal halides Chemical class 0.000 abstract 1
- 229910001615 alkaline earth metal halide Inorganic materials 0.000 abstract 1
- 239000002131 composite material Substances 0.000 abstract 1
- 239000004020 conductor Substances 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000395 magnesium oxide Substances 0.000 abstract 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 abstract 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 238000010943 off-gassing Methods 0.000 abstract 1
- -1 potassium chloride Chemical class 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
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
- H01J29/023—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof secondary-electron emitting electrode arrangements
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes
- H01J9/125—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes of secondary emission electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2201/00—Electrodes common to discharge tubes
- H01J2201/32—Secondary emission electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
884,053. Secondary-electron-emissive electrodes. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 30, 1960 [Oct. 22, 1959], No. 35850/59. Class 39(1) A dynode comprises a composite film supported by an outer frame 1, the film including a slack, electron-permeable supporting layer 2, where necessary a layer of conductive material 3, and a layer of secondary-electron-emissive material 4 marginally spaced from the inner edge of the frame. The arrangement is such that, upon subsequent baking, e.g. outgassing of a discharge tube, shrinkage of the emissive material causes some of the slack in the supporting layer to be taken up, but does not tear this layer away from the frame. In a preferred method of making such a dynode, an initially taut layer 2 of aluminium oxide or magnesium oxide, e.g. an anodised aluminium sheet 450 thick, is stuck to a soda glass ring 1 and is then permanently stretched by heating to a temperature such that the expansion of the ring 1 relative to the layer 2 stretches this layer beyond its yield point. Alternatively, the layer 2 may be of gold or silver arid the frame 1 of a metal having a larger thermal coefficient of expansion. If a conductive layer 3 is required it may be of aluminium, and the emissive material may be an alkali metal halide or an alkaline earth metal halide, e.g. potassium chloride, both being applied to the supporting layer 2 by evaporation in vacuo. As shown in Fig. 6, a plurality of such dynodes 8 are mounted by means of wires 9 in an image intensifier tube.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL123904D NL123904C (en) | 1959-10-22 | ||
| NL257110D NL257110A (en) | 1959-10-22 | ||
| GB35850/59A GB884053A (en) | 1959-10-22 | 1959-10-22 | Improvements in or relating to dynodes for use in electron discharge tubes and methods of making same |
| US60643A US3128531A (en) | 1959-10-22 | 1960-10-05 | Dynodes for electron discharge tubes and methods of making same |
| DEN19062A DE1173596B (en) | 1959-10-22 | 1960-10-20 | Manufacturing process for electron multiplication dynodes |
| FR841807A FR1270989A (en) | 1959-10-22 | 1960-10-21 | Secondary cathode for electron tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB35850/59A GB884053A (en) | 1959-10-22 | 1959-10-22 | Improvements in or relating to dynodes for use in electron discharge tubes and methods of making same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB884053A true GB884053A (en) | 1961-12-06 |
Family
ID=10382211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35850/59A Expired GB884053A (en) | 1959-10-22 | 1959-10-22 | Improvements in or relating to dynodes for use in electron discharge tubes and methods of making same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3128531A (en) |
| DE (1) | DE1173596B (en) |
| GB (1) | GB884053A (en) |
| NL (2) | NL123904C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3262007A (en) * | 1963-07-26 | 1966-07-19 | Hollingsworth R Lee | Single gun compatible color reproduction tube |
| US3458913A (en) * | 1966-04-19 | 1969-08-05 | Siemens Ag | Supply cathode for electrical discharge vessels and method for its production |
| US3755865A (en) * | 1969-05-01 | 1973-09-04 | Gen Electric | Novel mesh-reinforced sec target for camera tubes |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1699597A (en) * | 1924-03-27 | 1929-01-22 | Westinghouse Lamp Co | Evacuating audion tube |
| US2677873A (en) * | 1946-01-10 | 1954-05-11 | Us Navy | Method of making nickel sponge cathodes |
| NL76863C (en) * | 1947-06-03 | |||
| US2624024A (en) * | 1949-10-26 | 1952-12-30 | Hartford Nat Bank & Trust Co | Cathode for use in electron discharge tubes |
| US2746129A (en) * | 1949-11-16 | 1956-05-22 | Bell Telephone Labor Inc | Method of producing a taut thin member |
| US2721372A (en) * | 1951-06-30 | 1955-10-25 | Philips Corp | Incandescible cathodes |
| GB790416A (en) * | 1953-06-05 | 1958-02-12 | Emi Ltd | Improvements in or relating to electron discharge devices incorporating electron multipliers |
| US2871086A (en) * | 1956-02-10 | 1959-01-27 | Westinghouse Electric Corp | Method for baking and exhausting electron discharge devices |
| US2871368A (en) * | 1956-09-21 | 1959-01-27 | Itt | Image multiplier |
| US2881343A (en) * | 1957-04-16 | 1959-04-07 | Rca Corp | Electron multipliers |
-
0
- NL NL257110D patent/NL257110A/xx unknown
- NL NL123904D patent/NL123904C/xx active
-
1959
- 1959-10-22 GB GB35850/59A patent/GB884053A/en not_active Expired
-
1960
- 1960-10-05 US US60643A patent/US3128531A/en not_active Expired - Lifetime
- 1960-10-20 DE DEN19062A patent/DE1173596B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE1173596B (en) | 1964-07-09 |
| NL123904C (en) | |
| NL257110A (en) | |
| US3128531A (en) | 1964-04-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3159442A (en) | Production of thin films | |
| GB415411A (en) | Improvements in high vacuum cathode ray tubes | |
| US2606299A (en) | Image intensifier tube | |
| US2594026A (en) | Electron tube with luminescent shield, especially tuning tube | |
| US2189322A (en) | Photoelectric cathode | |
| GB884053A (en) | Improvements in or relating to dynodes for use in electron discharge tubes and methods of making same | |
| GB892504A (en) | Improvements in or relating to a method of forming a photoemissive surface | |
| GB1073161A (en) | Improvements in image-converter tubes | |
| US3262002A (en) | Convertible x-ray detector | |
| US2149455A (en) | Television transmitting apparatus | |
| US2748304A (en) | Electric discharge tube for intensifying fluorescent images produced with the use ofchi-rays | |
| GB791646A (en) | Improvements in or relating to methods of manufacturing cathode-ray tubes for reproducing colour television images | |
| US2175888A (en) | Photoelectric cathode | |
| US2206372A (en) | Method of manufacturing secondary emitting electrodes | |
| US2691612A (en) | Method for forming thin layers of a substance on curved walls, for instance on the wals of television tubes | |
| GB744672A (en) | A ray exit-window for discharge devices, particularly x-ray tubes | |
| GB1207283A (en) | Method of making photoemissive electron tubes | |
| GB1395441A (en) | Image intensifiers | |
| US1824573A (en) | Photo-electric tube | |
| FR2445612A1 (en) | Image tube with micro-channel pad - sepg. two chambers and with getter material on luminescent screen | |
| US3660710A (en) | Display device having cathodes and lead wires disposed in grooved base plate for positive insulation therebetween | |
| US2656489A (en) | Electron discharge device and processing thereof | |
| Zacharov et al. | An Image Intensifier with a Thin End-Window | |
| GB937391A (en) | Cold-cathode glow-discharge tubes | |
| Folkes | Introduction of pre-formed photocathodes into vacuum systems |