US3612875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mossbauer spectrometer
Assignee: United States Atomic Energy Commission
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Filing: 1970-10-15
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Granted: 1971-10-12
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Expires: 1990-10-15
Abstract
Abstract A Mossbauer spectrometer includes a source shielded by a layer of depleted uranium covered with a layer of graded shielding material. A detector is placed so that it is shielded from the gamma radiation from the source. The sample being examined is inclined at an angle to the beam of gamma rays from the source so that the resonant and nonresonant gamma-ray energy is directed to the detector.
Inventors
- 👤 Richard Neil Ord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:04
CPC Classifications
G; G21; G21K; G21K1/00; G21K1/10; G21K1/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
A Mossbauer backscatter spectrometer for nondestructive analysis of a material sample, including in combination, a highenergy gamma source, a radiation shield positioned around said gamma source, said radiation shield including a layer of depleted uranium having an exit port therein, means for positioning said sample opposite said exit port in the path of said gamma radiation from said source, said sample being positioned at an angle to said path of said gamma radiation whereby backscattered gamma therefrom is directed away from said path of said gamma radiation, detector means positioned to receive said backscatter gamma from said sample, said detector means further being positioned so that said shielding is between said source and said detector means.
Claim 2
Dependent Claim
116 words
A Mossbauer backscatter spectrometer for nondestructive analysis of a material sample, including in combination, a highenergy gamma source, a radiation shield positioned around said gamma source, said radiation shield including a layer of depleted uranium having an exit port therein, means for positioning said sample opposite said exit port in the path of said gamma radiation from said source, said sample being positioned at an angle to said path of said gamma radiation whereby backscattered gamma therefrom is directed away from said path of said gamma radiation, detector means positioned to receive said backscatter gamma from said sample, said detector means further being positioned so that said shielding is between said source and said detector means.
Claim 3
Dependent Claim
41 words
The Mossbauer backscatter spectrometer of claim 1 wherein, said radiation shield includes a graded shield surrounding said depleted uranium, said graded shield including a layer of polyethylene and a layer of copper positioned between said polyethylene layer and said depleted uranium.
Claim 4
Dependent Claim
60 words
The Mossbauer backscatter spectrometer of claim 2 further including, source driving means positioned within said radiation shield, said source being mounted on said source driving means, said source driving means acting to move said source alternately toward and away from said exit port at a constant acceleration whereby the energy of said gamma radiation is swept across a desired range.
Claim 5
Dependent Claim
15 words
The Mossbauer backscatter spectrometer of claim 3 wherein, said exit port is conicAl in shape.
Claim 6
Dependent Claim
24 words
The Mossbauer backscatter spectrometer of claim 4 wherein, said sample is inclined at an angle of 45* to said path of said gamma radiation.
References Cited (Backward Citations)
US3506829A
Cited
US3454766A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-11 | 1975-04-12 | 1975-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-11 | 1979-04-12 | 1979-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-11 | 1983-04-12 | 1983-10-12 | $7700.00 | Window Closed / Lapsed |