GB648962A - Improvements in or relating to electric discharge tubes - Google Patents
Improvements in or relating to electric discharge tubesInfo
- Publication number
- GB648962A GB648962A GB3673/47A GB367347A GB648962A GB 648962 A GB648962 A GB 648962A GB 3673/47 A GB3673/47 A GB 3673/47A GB 367347 A GB367347 A GB 367347A GB 648962 A GB648962 A GB 648962A
- Authority
- GB
- United Kingdom
- Prior art keywords
- anode
- cylinder
- refractory body
- absorbing material
- grooves
- 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
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
- H01J41/18—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes
- H01J41/20—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/28—Non-electron-emitting electrodes; Screens
- H01J19/32—Anodes
- H01J19/36—Cooling of anodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
-
- 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
- H01J29/94—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0002—Construction arrangements of electrode systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/0012—Constructional arrangements
- H01J2893/0027—Mitigation of temperature effects
Landscapes
- Lasers (AREA)
- Discharge Lamp (AREA)
Abstract
648,962. Discharge apparatus. PHILIPS LAMPS, Ltd. Feb. 7, 1947, No. 3673. Convention date, March 11, 1944. [Class 39 (i)] In an electric discharge tube a refractory body or bodies covered with gas absorbing material is or are secured to an artificially cooled anode in such a way that the thermal conductance between the refractory body or bodies and the anode is small and the gas absorbing material is heated by electron bombardment to a temperature at which it acts as a getter to the tube. The gas absorbing material may be, for example, zirconium, thorium, titanium or tantalum, the refractory body of molybdenum, tungsten or tantalum and the anode of copper. The gas absorbing material may be attached to the refractory body by sintering. A zirconium covered split molybdenum cylinder 6, Fig. 1, provided with internal projections 7, is clamped around the liquid-cooled anode 1, or a smooth split cylinder 10, Fig. 3, may grip an anode 8 formed with grooves 9. The refractory body may be in the form of a helix and the anode provided with spiral grooves in the opposite sense. One or more rods may be laid in grooves of the anode and tied on to it, for example, with a few turns of zirconium wire, the area of contact being relatively small. In a velocity modulation tube a split molybdenum cylinder 13, Fig. 5, is held in a recess inside the liquidcooled anode 15. The cylinder may be provided with projections, or'the grooves may be formed in the anode. By displacement of a magnet coil 14 the distribution of the electrons as between the cylinder 13 and the rear wall 16 of the anode may be controlled. Preferably, the cylinder 13 is red-hot during operation.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL250761X | 1944-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB648962A true GB648962A (en) | 1951-01-17 |
Family
ID=19781093
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3673/47A Expired GB648962A (en) | 1944-03-11 | 1947-02-07 | Improvements in or relating to electric discharge tubes |
Country Status (5)
Country | Link |
---|---|
US (1) | US2493659A (en) |
BE (1) | BE462688A (en) |
CH (1) | CH250761A (en) |
DE (1) | DE809223C (en) |
GB (1) | GB648962A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1298648B (en) * | 1962-05-09 | 1969-07-03 | Siemens Ag | Time-of-flight tubes with ion traps arranged coaxially around the electron beam |
GB2147455A (en) * | 1983-09-30 | 1985-05-09 | Outokumpu Oy | Activating a gas phase stabilizer in a proportional counter |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1067942B (en) * | 1959-10-29 | VEB Werk für Fernmeldewesen, Berfin-Oberschöneweide | Non-evaporating getter material made of titanium, zirconium, vanadium, niobium and possibly aluminum for electrical discharge vessels and processes for its production | |
US3086135A (en) * | 1952-06-05 | 1963-04-16 | Bertele Hans Carl | Mercury-vapour electric discharge apparatus |
US2915575A (en) * | 1956-07-09 | 1959-12-01 | Hoskins Mfg Company | Method and apparatus for prolonging life of thermocouples |
US3050651A (en) * | 1956-09-04 | 1962-08-21 | Gen Electric | High temperature electron discharge device and apparatus |
US3381148A (en) * | 1965-04-02 | 1968-04-30 | Army Usa | Fossil fuel-fired thermionic converters |
US3727089A (en) * | 1970-06-24 | 1973-04-10 | S Chow | Small sized stroboscopic tube for photographic use |
US5017831A (en) * | 1987-12-30 | 1991-05-21 | Gte Products Corporation | Glow discharge lamp with getter material on anode |
US20170263435A1 (en) * | 2016-03-11 | 2017-09-14 | Agilent Technologies, Inc. | Filament assembly for generating electrons, and related devices, systems and methods |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1700945A (en) * | 1926-05-10 | 1929-02-05 | Loppacker Albert | Plate for radiotubes |
US2410063A (en) * | 1940-07-02 | 1946-10-29 | Univ Leland Stanford Junior | High-frequency tube structure and apparatus |
US2263164A (en) * | 1941-02-25 | 1941-11-18 | Westinghouse Electric & Mfg Co | Anode |
US2368060A (en) * | 1942-01-01 | 1945-01-23 | Bell Telephone Labor Inc | Coating of electron discharge device parts |
-
0
- BE BE462688D patent/BE462688A/xx unknown
-
1946
- 1946-01-21 CH CH250761D patent/CH250761A/en unknown
-
1947
- 1947-02-07 GB GB3673/47A patent/GB648962A/en not_active Expired
- 1947-02-14 US US728573A patent/US2493659A/en not_active Expired - Lifetime
-
1948
- 1948-10-22 DE DEP19055D patent/DE809223C/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1298648B (en) * | 1962-05-09 | 1969-07-03 | Siemens Ag | Time-of-flight tubes with ion traps arranged coaxially around the electron beam |
GB2147455A (en) * | 1983-09-30 | 1985-05-09 | Outokumpu Oy | Activating a gas phase stabilizer in a proportional counter |
Also Published As
Publication number | Publication date |
---|---|
US2493659A (en) | 1950-01-03 |
CH250761A (en) | 1947-09-15 |
BE462688A (en) | |
DE809223C (en) | 1951-07-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2304186A (en) | Velocity modulated tube | |
US2291948A (en) | High voltage X-ray tube shield | |
US2367332A (en) | Cathode | |
US2698913A (en) | Cathode structure | |
US2607904A (en) | Electron optical system for cathodes of electron beam tubes | |
GB648962A (en) | Improvements in or relating to electric discharge tubes | |
US2412302A (en) | Getter | |
US1893887A (en) | Electron tube | |
GB1101293A (en) | High output duoplasmatron-type ion source | |
GB906274A (en) | Improvements relating to beam tubes | |
US2252118A (en) | Electron tube | |
US1924368A (en) | Vacuum tube | |
GB924223A (en) | Getter for electron tubes | |
US2151766A (en) | Magnetron | |
US2670451A (en) | Short arc high-pressure vapor discharge lamp | |
US3896332A (en) | High power quick starting magnetron | |
US2838708A (en) | Electron discharge device and method of gettering | |
US2404953A (en) | Electric discharge lamp | |
US1929124A (en) | Space current device | |
GB544326A (en) | Improvements in or relating to a method and apparatus for electrically heating materials | |
US1989954A (en) | Electric discharge tube | |
US3603088A (en) | Ion thruster cathode | |
US2124682A (en) | Electrical gaseous discharge device | |
US2324766A (en) | Electron discharge device | |
US3227912A (en) | Semi-indirectly heated electron tube cathode |