Device for forming images of ionizing particles by means of a multi-wire proportional chamber
US5596201A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 10, 1994 |
| Grant date | Jan 21, 1997 |
| Priority date | — |
| Expiry date | Mar 10, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T1/2935
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A device for forming images of ionizing particles through single-dimensional electrophoresis provided with a multi-wire proportional chamber. The chamber filled with a gas is of asymmetric structure and is formed successively by an entry window for the particles, taken to a negative potential, a multi-wire anode electrode, taken to a potential positive with respect to a reference potential, and a cathode electrode which is placed in the vicinity of the anode electrode. The cathode electrode, which is taken to the reference potential, is formed by a network of parallel electrically conducting strips. Detection of the position of impact of the ionizing particle along the pitch of the network is performed by induction of a delayed electric pulse caused by an avalanche of the ionization electrons issuing from the ionizing particle in the region of the strip situated in line with the impact by the particle in the chamber, the reference time being that of the ionization electrons close to the wires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.