US5128546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diamond scintillation detector
Assignee: Individual
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Filing: 1989-12-28
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Granted: 1992-07-07
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Expires: 2009-12-28
Abstract
Abstract The invention provides a scintillation detector for nuclear radiation which comprises a synthetic diamond having a nitrogen impurity concentration of 150 ppm or less. The detector has solvent (or oxides thereof) impurity concentrations of 1000 ppm or less, where the solvents are any of the following: Ni, Cu, Mn, Al or Cr, or combinations thereof. The detector has Fe and Co impurity concentrations of less than 10 ppm. A practical version of the detector includes an optical fibre and a photomultiplier tube, the optical fibre collecting light emitted by the diamond and channelling it to the photomultiplier tube.
Inventors
- 👤 Tom L. Nam
- 👤 Hendrik J. Van Rijn
- 👤 Rex J. Keddy
- 👤 Paul J. Fallon
- 👤 Joanne F. Schlimmer nee Andrews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:04
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/202; G01T1/26
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
31 words
A scintillation detector for nuclear radiation which comprises a synthetic diamond having a nitrogen impurity concentration of 150 ppm or less and an iron impurity concentration of less than 10 ppm.
Claim 2
Dependent Claim
31 words
A scintillation detector for nuclear radiation which comprises a synthetic diamond having a nitrogen impurity concentration of 150 ppm or less and an iron impurity concentration of less than 10 ppm.
Claim 3
Dependent Claim
36 words
A scintillation detector according to claim 1 having solvent (or oxides thereof) impurity concentrations of 1000 ppm or less, where the solvents are any of the following: Ni, Cu, Mn, Al or Cr, or combinations thereof.
Claim 4
Dependent Claim
17 words
A scintillation detector according to claim 1 having a Co impurity concentration of less than 10 ppm.
Claim 5
Dependent Claim
32 words
A scintillation detector according to claim 1 which includes an optical element and a photomultiplier tube, the optical element collecting light emitted by the diamond and channelling it to the photomultiplier tube.
Claim 6
Dependent Claim
17 words
A scintillation detector according to claim 4 wherein the optical element comprises at least one optical fibre.
Claim 7
Dependent Claim
14 words
A scintillation detector according to claim 1 comprising a bonded mass of diamond crystals.
Claim 8
Dependent Claim
14 words
A scintillation detector according to claim 1 including a layer of selectively radiation-absorbent material.
Claim 9
Dependent Claim
12 words
A scintillation detector according to claim 7 wherein the layer comprises polyethylene.
Claim 10
Dependent Claim
12 words
A scintillation detector according to claim 7 wherein the layer comprises boron.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-07-07 | 1996-01-06 | 1996-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-07 | 2000-01-06 | 2000-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-07 | 2004-01-06 | 2004-07-07 | $7700.00 | Window Closed / Lapsed |