Compact ion chamber based neutron detector
US9170340B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Nov 12, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01T3/00
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
A directional neutron detector has an ion chamber formed in a dielectric material; a signal electrode and a ground electrode formed in the ion chamber; a neutron absorbing material filling the ion chamber; readout circuitry which is electrically coupled to the signal and ground electrodes; and a signal processor electrically coupled to the readout circuitry. The ion chamber has a pair of substantially planar electrode surfaces. The chamber pressure of the neutron absorbing material is selected such that the reaction particle ion trail length for neutrons absorbed by the neutron absorbing material is equal to or less than the distance between the electrode surfaces. The signal processor is adapted to determine a path angle for each absorbed neutron based on the rise time of the corresponding pulse in a time-varying detector signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.