US3860845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Long life proportional counter radiation detector
Assignee: Westinghouse Electric Corp
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Filing: 1973-06-27
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Granted: 1975-01-14
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Expires: 1993-06-27
Abstract
Abstract A long life gas-filled proportional counter radiation detector is provided having a shielded gas reservoir interconnected with the prime detection chamber. The gas fill within the detection chamber is exposed to radiation but the reservoir gas is shielded to thereby minimize dissociation and absorption of the gas upon the chamber wall.
Inventors
- 👤 Charles H Gleason
- 👤 Allan J Bamford
- 👤 Wallace Gillies
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:34
CPC Classifications
H; H01; H01J; H01J47/00; H01J47/06; H01J47/12
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
106 words
A radiation detector comprising a discharge confining envelope having a neutron absorptive material deposited on the interior surface thereof, a centralized conductive member supported within said discharge confining envelope with at least one end of the conductive member brought through said envelope, a fill gas within said disharge confining envelope at least a portion of which is dissociable gas which is dissociable upon exposure to radiation emitted by the neutron-absorptive material, and a fill gas reservoir interconnected with the said discharge confining envelope but substantially shielded therefrom, to prevent exposure of the fill gas contained within the reservoir to radiation emitted by the neutron absorptive material.
Claim 2
Dependent Claim
106 words
A radiation detector comprising a discharge confining envelope having a neutron absorptive material deposited on the interior surface thereof, a centralized conductive member supported within said discharge confining envelope with at least one end of the conductive member brought through said envelope, a fill gas within said disharge confining envelope at least a portion of which is dissociable gas which is dissociable upon exposure to radiation emitted by the neutron-absorptive material, and a fill gas reservoir interconnected with the said discharge confining envelope but substantially shielded therefrom, to prevent exposure of the fill gas contained within the reservoir to radiation emitted by the neutron absorptive material.
Claim 3
Dependent Claim
24 words
The device specified in claim 1, wherein the fill gas reservoir is defined between a sealed outer envelope concentric about said discharge confining envelope.
Claim 4
Dependent Claim
45 words
The device specified in claim 1, wherein a plurality of discharge confining envelopes are disposed within a sealed outer envelope, with the fill gas reservoir defined between the sealed outer envelope and the plurality of discharge confining envelopes each of which communicates with the reservoir.
Claim 5
Dependent Claim
23 words
The device specified in claim 1, wherein the fill gas reservoir volume is preferably greater than the volume of the discharge confining envelope.
Claim 6
Dependent Claim
24 words
The device specified in claim 1, wherein the neutron absorptive material is boron deposited as a thin layer upon the conductive discharge confining envelope.
Claim 7
Dependent Claim
31 words
The device specified in claim 1, wherein the fill gas is a mixture of argon and carbon dioxide, with the carbon dioxide present in an amount of about 5 volume percent.
Claim 8
Dependent Claim
17 words
The device specified in claim 1, wherein the discharge confining envelope is a cylindrical proportional counter detector.
Claim 9
Dependent Claim
18 words
The device specified in claim 1, wherein a neutron moderator material is disposed about the fill gas reservoir.
References Cited (Backward Citations)
US3702409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |