US5500147A
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US
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Scintillation solid and method of measuring radiation
Assignee: Optical Semiconductors Inc
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Filing: 1992-10-27
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Granted: 1996-03-19
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Expires: 2012-10-27
Abstract
Abstract A monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper and a method of measuring radiation using the scintillation body and an apparatus for measuring radiation are disclosed.
Inventors
- 👤 Brian J. Fitzpatrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:11
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/58; C09K11/582; C09K11/584; C04; C04B; C04B35/00; C04B35/515; C04B35/547; C30; C30B; C30B11/00; C30B11/003; C30B29/00; C30B29/10; C30B29/46; C30B29/48; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/32; C04B2235/3284; C04B2235/40; C04B2235/407
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
48 words
A monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence scintillation efficiency from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper.
Claim 2
Dependent Claim
48 words
A monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence scintillation efficiency from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper.
Claim 3
Dependent Claim
33 words
A scintillation body as defined by claim 1 wherein the copper concentration is from about 0.3 parts per million based on the weight of the zinc sulfide to about 100 parts per million.
Claim 4
Dependent Claim
33 words
A scintillation body as defined by claim 1 wherein the copper concentration is from about 0.6 parts per million based on the weight of the zinc sulfide to about 30 parts per million.
Claim 5
Dependent Claim
33 words
A scintillation body as defined by claim 1 wherein the copper concentration is from about 0.6 parts per million based on the weight of the zinc sulfide to about 10 parts per million.
Claim 6
Dependent Claim
25 words
A scintillation body as defined by claim 1 wherein the body has generally constant luminescence from about 25° C. to at least about 220° C.
Claim 7
Dependent Claim
23 words
A scintillation body as defined by claim 1 wherein the body has a generally constant luminescence from about 25° to about 260° C.
Claim 8
Dependent Claim
19 words
A scintillation body as defined by claim 1 wherein the body has a scintillation efficiency of at least 10%.
Claim 9
Dependent Claim
19 words
A scintillation body as defined by claim 1 wherein the copper is uniformly distributed within each crystal domain grain.
Claim 10
Dependent Claim
21 words
A scintillation body as defined by claim 1 wherein the body further includes an alloy of zinc sulfide with cadmium sulfide.
Claim 11
Dependent Claim
33 words
A scintillation body as defined by claim 1 wherein the scintillation efficiency of said body varies no more than about 3% over the temperature range from about 25° C. to about 220° C.
Claim 12
Independent Claim
87 words
A method of measuring radiation comprising a. subjecting a monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence scintillation efficiency from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper to incident radiation at an ambient temperature from about 25° C. to at least about 200° C. to thereby cause the emission of scintillation photons and b. detecting said scintillation photons.
Claim 13
Independent Claim
87 words
A method of measuring radiation comprising a. subjecting a monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence scintillation efficiency from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper to incident radiation at an ambient temperature from about 25° C. to at least about 200° C. to thereby cause the emission of scintillation photons and b. detecting said scintillation photons.
Claim 14
Independent Claim
68 words
An apparatus for measuring radiation comprising a. A monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence scintillation efficiency from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper and b. a detector for detecting scintillation photons emitted by said scintillation body.
Claim 15
Independent Claim
68 words
An apparatus for measuring radiation comprising a. A monolithic solid scintillation body with a monocrystalline or polycrystalline morphology having generally constant luminescence scintillation efficiency from about 25° C. to at least about 200° C. and average crystal domain grain diameters of at least about 5 millimeters and being composed of zinc sulfide doped with copper and b. a detector for detecting scintillation photons emitted by said scintillation body.
References Cited (Backward Citations)
US4499005A
Cited
US5032316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1999-03-19 | 1999-09-18 | 2000-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-19 | 2003-09-18 | 2004-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-19 | 2007-09-18 | 2008-03-19 | $7700.00 | Window Closed / Lapsed |