GB1288816A - - Google Patents
Info
- Publication number
- GB1288816A GB1288816A GB1288816DA GB1288816A GB 1288816 A GB1288816 A GB 1288816A GB 1288816D A GB1288816D A GB 1288816DA GB 1288816 A GB1288816 A GB 1288816A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dissolved
- stabilizer
- tetracyanoparaquinodimethane
- polyurethane
- tube
- 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
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
- H01J43/24—Dynodes having potential gradient along their surfaces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/28—Measuring radiation intensity with secondary-emission detectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J49/00—Particle spectrometers or separator tubes
- H01J49/02—Details
- H01J49/025—Detectors specially adapted to particle spectrometers
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Conductive Materials (AREA)
Abstract
1288816 Conductive polymer compositions MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 23 Dec 1969 [27 Dec 1968 (3)] 62758/69 Headings C3B C3P and C3R [Also in Divisions F2 and H1] A channel electron multiplier comprises a flexible tube of a resistive secondary-emissive polymer which is preferably bent into a semicircle (Fig. 7, not shown) or into a helix as shown in Fig. 6. The input end of the tube may expand into a horn of circular or of rectangular crosssection. The tube may have internal and external diameter of 2 mm. and 1 mm. respectively and be 10 cm. in length with a resistance of 6 Î 10<SP>11</SP> ohms. The multiplier may be used as the detector of a mass spectrometer, as the detector of a device for measuring ions or electrons in space, or in an image intensifier. Materials.-One suitable material comprises 35 g. of lithium- or potassium-tetracyanoparaquinodimethane, 30 g. of polyvinyl chloride (average polymerization 1,200), 30 g. of low molecular weight polyurethane, and 5 g. of stabilizer (equivalent mixture of tribasic lead sulphate and Cd-Ba type stabilizer). Another composition comprises 35 g. sodium-tetracyanoparaquinodimethane, 45 g. PVC, 55 g. polyurethane and 10 g. stabilizer. In a further example a styrene-ethylacrylate-2-vinylpyridine copolymer (at a ratio of 40:40:20) is dissolved in toluene, quaternarized by hydriodic acid, dissolved in acetonitrile and reacted withlithium-tetracyanoparaquinodimethane to form a material which is flexible and mouldable, and which is moulded into a pipe. In another example poly-2-vinylpyridine is dissolved in ethanol, quaternarized by hydriodic acid, and dissolved in a solvent of water and ethanol. This is mixed with an aqueous solution of lithium-tetracyano-paraquinodimethane to form a precipitate which is blended with PVC, polyurethane, and stabilizer in the proportions 50: 30: 25: 5. Alternative compositions comprise polymers with carbon or metal powder added to give the required electrical conductivity. One example of this comprises 90 g. of an intermediate density polyethylene with 10 g. of carbon black. Another example comprises 30 g. polyamide with 100 g. of an epoxy resin and 10 g. of a conductive silver powder; the mixture is poured into a mould and cured for 1 hour at 60‹ C.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP65669A JPS525828B1 (en) | 1968-12-26 | 1968-12-26 | |
JP65569A JPS525827B1 (en) | 1968-12-27 | 1968-12-27 | |
JP65469A JPS525826B1 (en) | 1968-12-27 | 1968-12-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1288816A true GB1288816A (en) | 1972-09-13 |
Family
ID=27274545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1288816D Expired GB1288816A (en) | 1968-12-26 | 1969-12-23 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1964665B2 (en) |
FR (1) | FR2027212A1 (en) |
GB (1) | GB1288816A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3617348A1 (en) * | 1986-05-23 | 1987-11-26 | Electronic Werke Deutschland | ELECTRIC CONVERTER |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3329885A1 (en) * | 1983-08-18 | 1985-03-07 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen | CHANNEL SECOND ELECTRONISM multiplier |
-
1969
- 1969-12-23 GB GB1288816D patent/GB1288816A/en not_active Expired
- 1969-12-23 DE DE19691964665 patent/DE1964665B2/en active Pending
- 1969-12-24 FR FR6944939A patent/FR2027212A1/fr active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3617348A1 (en) * | 1986-05-23 | 1987-11-26 | Electronic Werke Deutschland | ELECTRIC CONVERTER |
Also Published As
Publication number | Publication date |
---|---|
FR2027212A1 (en) | 1970-09-25 |
DE1964665A1 (en) | 1970-07-02 |
DE1964665B2 (en) | 1971-06-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PE20 | Patent expired after termination of 20 years |