US3673100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid scintillator compositions for gamma-ray counting
Assignee: Monsanto Co
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Filing: 1969-04-23
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Granted: 1972-06-27
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Expires: 1989-04-23
Abstract
Abstract A scintillator composition and method for liquid scintillation detection and counting of gamma-rays, said composition comprising, (1) a scintillator solution comprised of an aromatic hydrocarbon solvent, a scintillation solute and an ethoxylated alkyl phenol and, (2) a loading agent comprised of an aqueous solution of a compound of an element having an atomic number greater than twenty.
Inventors
- 👤 Royal H Benson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:36
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/204; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
39 words
The composition of claim 1 wherein said scintillator solution is present in an amount of from 40 to 99 percent by weight and said loading agent is present in an amount of from 1 to 60 percent by weight.
Claim 2
Dependent Claim
44 words
The composition of claim 2 wherein said aqueous solution contains, by weight, from 10 to 90 percent of the maximum amount of said compound, expressed as weight per cent, soluble in water at the temperature at which said scintillator composition is to be used.
Claim 3
Dependent Claim
12 words
The composition of claim 3 wherein the aromatic hYdrocarbon solvent is xylene.
Claim 4
Dependent Claim
36 words
The composition of claim 4 wherein said scintillation solute is present in an amount of from 1 to 12 grams per liter of said scintillator solution and is comprised of a fluor and a wave-band shifter.
Claim 5
Dependent Claim
13 words
The composition of claim 5 wherein said scintillation solute comprises PPO and MSB.
Claim 6
Dependent Claim
164 words
In a liquid scintillation counting process for the detection of gamma-rays wherein a loading agent is added to a scintillator solution to increase the absorption of said gamma-rays, the improvement which comprises using a scintillator solution comprised of an aromatic hydrocarbon solvent, a scintillation solute and an ethoxylated alkyl phenol wherein the alkyl substituent contains from seven to 16 carbon atoms and the ratio of the number of carbon atoms in said alkyl substituent to the average number of ethoxy groups in said ethoxylated alkyl phenols is from 0.83 to 1.67, the volume ratio of said hydrocarbon solvent to said ethoxylated alkyl phenol in said scintillator solution being from 3:1 to 1:1 and said solute being present in an amount of from 0.5 to 50 grams per liter of said scintillator solution; and from 1 to 70 percent by weight of a loading agent comprised of an aqueous solution of a water soluble compound of an element having an atomic number greater than 20.
Claim 7
Dependent Claim
39 words
The process of claim 7 wherein said scintillator solution is present in an amount of from 40 to 99 percent by weight and said loading agent is present in an amount of from 1 to 60 percent by weight.
Claim 8
Dependent Claim
48 words
The process of claim 8 wherein said aqueous solution contains, by weight, from 10 to 90 percent of the maximum amount of said compound, expressed as weight per cent, soluble in water at the temperature at which said scintillator solution and said loading agent are to be used.
Claim 9
Dependent Claim
36 words
The process of claim 8 wherein said scintillation solute is present in an amount of from 1 to 12 grams per liter of said scintillator solution and is comprised of a fluor and a wave-band shifter.
References Cited (Backward Citations)
US3506828A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |