High-power X-ray source
US4238682A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 3, 1979 |
| Grant date | Dec 9, 1980 |
| Priority date | — |
| Expiry date | May 3, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J35/13
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Even ultra-thin films deposited on the surface of a high-power X-ray target anode (14) during water cooling thereof form thermal barriers that significantly limit the lifetime of the anode. The deposition of such films on the anode is minimized by utilizing several techniques. These include the use of low-corrosion metals such as high-chrome stainless steel in the cooling system, preferential etching of the water-carrying metallic members to provide chrome-rich surfaces, and complexing the metallic hydroxides that are produced in the cooling medium to hold them in a highly soluble state even in the immediate vicinity of the hot anode. These techniques, coupled with submicron filtering and systematic cleaning and maintenance of the cooling system, are important contributors to achieving highly reliable long-lifetime operation of a high-power X-ray source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.