GB411503A - Improvements in and relating to the treatment of metal targets in x-ray tubes - Google Patents
Improvements in and relating to the treatment of metal targets in x-ray tubesInfo
- Publication number
- GB411503A GB411503A GB31408/32A GB3140832A GB411503A GB 411503 A GB411503 A GB 411503A GB 31408/32 A GB31408/32 A GB 31408/32A GB 3140832 A GB3140832 A GB 3140832A GB 411503 A GB411503 A GB 411503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- energy
- treatment
- ray tubes
- tungsten
- 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
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
- H01J35/08—Anodes; Anti cathodes
- H01J35/12—Cooling non-rotary anodes
- H01J35/13—Active cooling, e.g. fluid flow, heat pipes
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Tungsten or other buttons forming the targets of X-ray tubes are aged to render them capable of withstanding electronic or ionic bombardment without cracking, by subjecting the tube before use, with the button mounted therein, to successive discharges at progressively increasing energies with intermediate cooling of the tube, the energy of the initial discharge being less than, and preferably approximately half of, the energy the tube is designed to withstand in normal operation. The energy of the final discharge may equal or exceed the normal energy. The treatment may be applied during or after exhaustion of the tube and produces a slow crystallization of the button Mechanical working of the tungsten to a fibrous grain structure before manufacture of the tube is referred to. The Specification as open to inspection under Sect. 91 comprises also the general treatment of metals and vacuum-tube electrodes by the discharge process. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US411503XA | 1931-11-07 | 1931-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB411503A true GB411503A (en) | 1934-06-07 |
Family
ID=21914998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB31408/32A Expired GB411503A (en) | 1931-11-07 | 1932-11-07 | Improvements in and relating to the treatment of metal targets in x-ray tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB411503A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998011592A1 (en) * | 1996-09-13 | 1998-03-19 | Varian Associates, Inc. | X-ray target having high z particles imbedded in a matrix |
-
1932
- 1932-11-07 GB GB31408/32A patent/GB411503A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998011592A1 (en) * | 1996-09-13 | 1998-03-19 | Varian Associates, Inc. | X-ray target having high z particles imbedded in a matrix |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB411503A (en) | Improvements in and relating to the treatment of metal targets in x-ray tubes | |
| GB237580A (en) | Improvements in or relating to x-ray tubes | |
| GB423567A (en) | Improvements in x-ray tubes | |
| GB396514A (en) | Improvements relating to electron emitters and to the manufacture of the same | |
| DE563148C (en) | High-performance tubes with tubular glow cathode | |
| AT115417B (en) | X-ray tube, especially for very low voltages. | |
| GB449617A (en) | Improvements in the manufacture of tubing by plastic deformation | |
| DE350318C (en) | Discharge tubes, in particular X-ray tubes, with a double-walled glass wall to protect against penetration by internal charges or only in the endangered parts | |
| AT119264B (en) | High emission rectifier tube. | |
| DE547819C (en) | Device for reducing the amount of steam in front of the anodes of mercury vapor rectifiers with a steam dome and a special condensation space for the mercury vapor separated from the work space by an insert that closes off with the container wall | |
| DE519524C (en) | Vacuum tubes with glow cathode and additional electron source | |
| AT111674B (en) | Cathode ray tube for extra high voltages. | |
| GB382605A (en) | Improvements in or relating to electron discharge tubes | |
| GB493487A (en) | Improvements relating to thermionic valves | |
| GB472126A (en) | Improvements in and relating to methods of sealing metal into quartz | |
| AU107512B2 (en) | Improvements in or relating tothe control of secondary emission fromthe scanned electrode in electron discharge tube arrangements | |
| GB423092A (en) | Improvements in or relating to electron discharge devices | |
| GB388046A (en) | Improvements in the introduction of chemically active substances into vacuum tubes | |
| Green et al. | The Spectrum of Tribly Ionised Antimony, Sb IV | |
| AU1760434A (en) | Improvements in or relating to electron discharge tube apparatus | |
| GB242915A (en) | Improvements in or relating to x-ray tubes comprising an incandescent cathode | |
| GB257604A (en) | Vacuum tubes | |
| Russ | Radium in Cancer | |
| GB401471A (en) | Improvements in or relating to gasfilled discharge tubes, particularly incandescent cathode rectifier tubes | |
| GB510413A (en) | Process for the production of alkaline earth metal vapours in closed electric discharge tubes with metal bulbs |