Ionizing radiation detector system
US4931653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 1988 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Jun 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2935
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An optical ionizing radiation detector system (10) for determining the three-dimensional spatial distribution of all of the secondary electrons produced by the passage of ionizing radiation through a selected gas is provided. The detector system (10) can be used over a wide range of particle energies and gas pressures. The ionizing radiation passing through the gas produces prompt fluorescence and secondary electrons. A coincidence detector (30) recognizes coincident events of prompt fluorescence in the gas contained within that chamber to initialize the system cycle. At that time, an AC electric field is generated by an R.F. pulse generator (40) to localize the secondary electrons proximate their respective positions of production. Cameras (42) and 42'), preferably of a digital type, produce an image of the localized electrons to determine their three-dimensional spatial positions. After such positions are determined, a unidirectional electric field is generated by clearing power supply (36) for clearing all charges from the gas chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.