Electret enabled thermal neutron flux detection and measurement
June 30, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2663802 3160567 3588505 3760183 Electret device having charge maintained by radioactivity Fission fragment driven neutron source Detectors of parameters adapted to act on the force of attraction between an electret and an electrode Electrets from plasma polymerized material Method for obtaining oriented gold and piezoelectric films Organic metal neutron detector InventorAssigneeApplicationNo. 374129 filed on 06/30/1989US Classes:376/154, By fission250/370.03, Fission fragment/fissionable isotope detection system250/370.05, Neutron detection system250/390.01, Neutron responsive means376/155With boronExaminersPrimary: Behrend, Harvey E.Attorney, Agent or FirmInternational ClassG01T 003/00AbstractAn improved thermal neutron flux detector and measuring apparatus of the neutron induced transmutation type. The disclosed apparatus employs a plastic film electret and a fissionable material such as uranium-235 for generating energetic ion fission fragments-fragments which alter the electric potential of the electret in a measurable manner. Electret characteristics and fissionable material member fabrication are also disclosed along with uses of the instrument for dosimetry and other purposes. | |
