Photomultiplier tube for collecting photoelectrons from a photocathode covering a whole inner surface of a vacuum container
US8324807B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2009 |
| Grant date | Dec 4, 2012 |
| Priority date | — |
| Expiry date | Jul 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J43/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A photomultiplier tube including a photocathode, an electron multiplier, an electron collector, and a power lead, wherein the photocathode and the electron multiplier are disposed in a sealed transparent vacuum envelope, the electron collector and the power lead are connected with an external circuit outside the vacuum envelope, the photocathode is formed on the entire inner surface of the vacuum envelope, and the electron multiplier is located on the internal center of the vacuum envelope to receive photoelectrons from the photocathode in all directions for electrons multiplication. Because the effective photocathode area is increased, the detection efficiency of unit light-receiving area is improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.