GB1112581A - Area sources of radioactivity and a method of making them - Google Patents
Area sources of radioactivity and a method of making themInfo
- Publication number
- GB1112581A GB1112581A GB26408/65A GB2640865A GB1112581A GB 1112581 A GB1112581 A GB 1112581A GB 26408/65 A GB26408/65 A GB 26408/65A GB 2640865 A GB2640865 A GB 2640865A GB 1112581 A GB1112581 A GB 1112581A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coated
- spheroids
- plate
- layer
- spheroidal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 5
- 239000010410 layer Substances 0.000 abstract 5
- 229910052751 metal Inorganic materials 0.000 abstract 5
- 239000002184 metal Substances 0.000 abstract 5
- 239000011521 glass Substances 0.000 abstract 3
- 230000002285 radioactive effect Effects 0.000 abstract 3
- 239000012857 radioactive material Substances 0.000 abstract 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 2
- 239000000853 adhesive Substances 0.000 abstract 2
- 230000001070 adhesive effect Effects 0.000 abstract 2
- 239000004411 aluminium Substances 0.000 abstract 2
- 229910052782 aluminium Inorganic materials 0.000 abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 2
- 229910052759 nickel Inorganic materials 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 abstract 2
- TXUICONDJPYNPY-UHFFFAOYSA-N (1,10,13-trimethyl-3-oxo-4,5,6,7,8,9,11,12,14,15,16,17-dodecahydrocyclopenta[a]phenanthren-17-yl) heptanoate Chemical compound C1CC2CC(=O)C=C(C)C2(C)C2C1C1CCC(OC(=O)CCCCCC)C1(C)CC2 TXUICONDJPYNPY-UHFFFAOYSA-N 0.000 abstract 1
- KWSLGOVYXMQPPX-UHFFFAOYSA-N 5-[3-(trifluoromethyl)phenyl]-2h-tetrazole Chemical compound FC(F)(F)C1=CC=CC(C2=NNN=N2)=C1 KWSLGOVYXMQPPX-UHFFFAOYSA-N 0.000 abstract 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 abstract 1
- 239000005083 Zinc sulfide Substances 0.000 abstract 1
- 239000011230 binding agent Substances 0.000 abstract 1
- 229910052793 cadmium Inorganic materials 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 238000005342 ion exchange Methods 0.000 abstract 1
- 229910052745 lead Inorganic materials 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 abstract 1
- 229910052763 palladium Inorganic materials 0.000 abstract 1
- PIBWKRNGBLPSSY-UHFFFAOYSA-L palladium(II) chloride Chemical compound Cl[Pd]Cl PIBWKRNGBLPSSY-UHFFFAOYSA-L 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 238000007747 plating Methods 0.000 abstract 1
- 229920003053 polystyrene-divinylbenzene Polymers 0.000 abstract 1
- VQMWBBYLQSCNPO-NJFSPNSNSA-N promethium-147 Chemical compound [147Pm] VQMWBBYLQSCNPO-NJFSPNSNSA-N 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 229910001961 silver nitrate Inorganic materials 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- VILMUCRZVVVJCA-UHFFFAOYSA-M sodium glycolate Chemical compound [Na+].OCC([O-])=O VILMUCRZVVVJCA-UHFFFAOYSA-M 0.000 abstract 1
- 229910001379 sodium hypophosphite Inorganic materials 0.000 abstract 1
- 235000011150 stannous chloride Nutrition 0.000 abstract 1
- 239000001119 stannous chloride Substances 0.000 abstract 1
- 229910052725 zinc Inorganic materials 0.000 abstract 1
- 239000011701 zinc Substances 0.000 abstract 1
- -1 zinc sulphide Chemical compound 0.000 abstract 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21G—CONVERSION OF CHEMICAL ELEMENTS; RADIOACTIVE SOURCES
- G21G4/00—Radioactive sources
- G21G4/04—Radioactive sources other than neutron sources
- G21G4/06—Radioactive sources other than neutron sources characterised by constructional features
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Laminated Bodies (AREA)
- Radiation-Therapy Devices (AREA)
- Luminescent Compositions (AREA)
Abstract
A radio-active source for a self-luminous structure comprises a malleable and ductile metal plate having pressed into the surface thereof discrete spheroidal elements, each consisting of a hard spheroidal core carrying radio-active material and coated with a layer of metal. A layer of phosphor such as zinc sulphide, preferably in a plastics binder, is coated on the plate. The spheroidal elements have a size range of 5 to 250 microns. The metal coating is between 0.2 and 5 microns thick. The activity of the surface of the plate is at least one microcurie per sq. inch. In an example, glass spheroids are formed, leached with acid, impregnated by ion exchange with radioactive promethium-147, heated to 1000 DEG C., washed, spheres of 40-50 micron size separated, plated with nickel (see Divisions C4-C7), sprinkled on an aluminium plate coated with an adhesive, pressed at 350 DEG C., and washed. A sulphonated polystyrene-divinyl benzene may be used instead of glass for the speroid cores. Other suitable metals for the plate are Cd, Au, Ag, Zn and Pb; the spheroids may be plated with Co instead of Ni. Other radio-isotopes are beta emitters Sr-90 and Y-90, alpha emitter Am-241, and gamma emitter Cs-137 which forms Ba-137M.ALSO:source (see Division G6), hard spheroidal cores carrying radioactive material are coated with a layer of metal. Glass spheroids are leached with acid, impregnated with radioactive material, and a 40-50 micron size range separated; the spheroids are placed in a stannous chloride solution to form a thin layer of tin and then in silver nitrate solution to form a second thin layer of silver, which is replaced by palladium using a palladium chloride solution; finally nickel is applied using a plating solution containing nickel chloride, sodium hydroxy-acetate, and sodium hypophosphite. To form the radioactive source, the coated spheroids are applied as a monolayer to an aluminium sheet coated with an adhesive and subjected to pressure at elevated temperature.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US382842A US3376422A (en) | 1964-07-15 | 1964-07-15 | Radioactive source comprising a sheet article containing a layer of small discrete radioactive beads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1112581A true GB1112581A (en) | 1968-05-08 |
Family
ID=23510614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB26408/65A Expired GB1112581A (en) | 1964-07-15 | 1965-06-22 | Area sources of radioactivity and a method of making them |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3376422A (en) |
| DE (1) | DE1297773B (en) |
| GB (1) | GB1112581A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4271362A (en) * | 1973-07-23 | 1981-06-02 | Republic Steel Corporation | Method and apparatus for detecting a distant object using gamma radiation |
| US4827493A (en) * | 1987-10-05 | 1989-05-02 | Amersham Corporation | Radiographic source |
| PL2249360T3 (en) * | 2009-05-04 | 2012-12-31 | Abb Schweiz Ag | Drive mechanism for medium voltage switch |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837659A (en) * | 1955-11-09 | 1958-06-03 | Philips Corp | Apparatus for calibrating energy sensitive devices |
| DE1784309U (en) * | 1957-11-13 | 1959-03-05 | Pierre Vidal | RADIOACTIVE EMITTER. |
| US2992726A (en) * | 1959-07-10 | 1961-07-18 | United Aircraft Corp | Specimen holder for radioactive samples |
| US3204103A (en) * | 1961-10-04 | 1965-08-31 | Minnesota Mining & Mfg | Beta radiation source in a ceramic carrier |
| US3253152A (en) * | 1962-04-20 | 1966-05-24 | Minnesota Mining & Mfg | Auto-canning of radiation sources |
| US3230374A (en) * | 1962-12-18 | 1966-01-18 | Leroy V Jones | Radioactive radiation emitting sources |
-
1964
- 1964-07-15 US US382842A patent/US3376422A/en not_active Expired - Lifetime
-
1965
- 1965-06-22 GB GB26408/65A patent/GB1112581A/en not_active Expired
- 1965-07-12 DE DEM65914A patent/DE1297773B/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3376422A (en) | 1968-04-02 |
| DE1297773B (en) | 1969-06-19 |
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