Space charge dosimeters for extremely low power measurements of radiation in shipping containers
US7932828B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2009 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Sep 30, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01L2924/0002
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
Methods and apparatus are described for space charge dosimeters for extremely low power measurements of radiation in shipping containers. A method includes in situ polling a suite of passive integrating ionizing radiation sensors including reading-out dosimetric data from a first passive integrating ionizing radiation sensor and a second passive integrating ionizing radiation sensor, where the first passive integrating ionizing radiation sensor and the second passive integrating ionizing radiation sensor remain situated where the dosimetric data was integrated while reading-out. Another method includes arranging a plurality of ionizing radiation sensors in a spatially dispersed array; determining a relative position of each of the plurality of ionizing radiation sensors to define a volume of interest; collecting ionizing radiation data from at least a subset of the plurality of ionizing radiation sensors; and triggering an alarm condition when a dose level of an ionizing radiation source is calculated to exceed a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.