Patent US3940627A successfully refreshed from Google Patents.
US3940627A
Expired / Lapsed
US
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Shielded-emitter neutron detector
Assignee: Siemens AG
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Filing: 1974-08-01
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Granted: 1976-02-24
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Expires: 1994-08-01
Abstract
Abstract A self-powered neutron detector has a neutron-sensitive emitter, a collector enclosing this emitter and insulation between these two components. When irradiated by neutrons, the emitter generates Compton electrons so that a current is produced between the emitter and electrode and which may be used with a current-measuring device to provide a readout. The emitter is enclosed and electrically connected with a metal which is substantially neutron-insensitive so that the detector provides a substantially true and prompt signal accurately reflecting the neutron flux density received by the detector.
Inventors
- 👤 Erich Klar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:14
CPC Classifications
G; G01; G01T; G01T3/00; G01T3/006
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
47 words
A self-powered neutron detector comprising a neutron-sensitive emitter, a collector enclosing said emitter, and insulation between said emitter and collector; wherein the improvement comprises said emitter being enclosed by a metal which is neutron-insensitive relative to said emitter and means for electrically interconnecting said metal and emitter.
Claim 2
Dependent Claim
47 words
A self-powered neutron detector comprising a neutron-sensitive emitter, a collector enclosing said emitter, and insulation between said emitter and collector; wherein the improvement comprises said emitter being enclosed by a metal which is neutron-insensitive relative to said emitter and means for electrically interconnecting said metal and emitter.
Claim 3
Dependent Claim
41 words
The detector of claim 1 in which said collector is tubular and encloses said insulation, said metal being formed as a tube enclosing said emitter, and said means being formed by contact between said tube and emitter, said emitter being rod-shaped.
Claim 4
Dependent Claim
30 words
The detector of claim 2 in which said emitter is a material having an atomic number no higher than that of material comprising said collector, and said tube comprises zirconium.
Claim 5
Dependent Claim
31 words
The detector of claim 2 in which said emitter is made of material selected from the class consisting of rhenium and thulium and said tube is made of a nickle-iron-chromium alloy.
Claim 6
Dependent Claim
25 words
The detector of claim 4 in which said tube has a wall thickness of about 10 to 25 percent of the thickness of said emitter.
Claim 7
Dependent Claim
16 words
The emitter of claim 4 in which said emitter comprises a powder held within said tube.
References Cited (Backward Citations)
US3390270A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-02-23 | 1979-08-25 | 1980-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-23 | 1983-08-25 | 1984-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-23 | 1987-08-25 | 1988-02-24 | $7700.00 | Window Closed / Lapsed |