http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2762083-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_ce78d0d8a0809cd460326151f8cc8733 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-7704 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G01T1-2023 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B11-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B28-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B35-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B11-001 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B11-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B11-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C30B29-12 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-85 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G01T1-202 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B29-12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B11-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B35-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C30B28-06 |
| filingDate | 2021-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 2021-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3caa62a1ea958f411c6a39c28fbf5d12 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cf5672a73e031d7f698daa7c047cebf4 |
| publicationDate | 2021-12-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2762083-C1 |
| titleOfInvention | Method for producing crystalline scintillator based on self-activated rare earth halide |
| abstract | FIELD: crystal growth.SUBSTANCE: invention relates to the technology of growing scintillation single crystals based on cerium bromide with the general formula CeBr3with a 100% content of scintillating ion Ce3+by horizontal directional crystallization (HDC) and can be used in the manufacture of detector elements and spectrometers sensitive to gamma, X-ray radiation and other types of ionizing radiation. A method for producing a crystalline scintillator based on self-activated rare earth halide CeBr3involves melting the initial charge and growing crystals in quartz ampoules or in a graphite boat in HDC installation by moving them through the heating zone, while ampoules with installed CeBr3crystal priming inside a pumped glove box are loaded with anhydrous crystals of the starting material with a purity of 99.99%, heated to a temperature of more than 100°C for 2 hours, pumped out up to 10-3mm Hg and they are sealed with an oxygen-propane burner, then the ampoules are installed in a growth unit, after creating a vacuum in the unit up to 10-3mm Hg they are heated until the charge melts, kept in a growth unit for 2-4 hours until an equilibrium state is established in the melt, a single crystal is grown by creating a gradient temperature section in the ampoule with horizontal stretching from the heating zone to the cooling zone at a speed of 5 mm/h, after which the ampoule is slowly cooled to room temperature to anneal the grown crystal, and when grown in a graphite boat, the starting material with CeBr3seed is installed in a growth unit, which is then evacuated to 10-3mm Hg, dried at a temperature of 200°C for 24 hours, after that, inert gas Ar and Br are injected in a mixture with the addition of brominating agent tetrabromomethane CBr4and dehydrogenating agent cadmium bromide CdBr2to an excess pressure of 1.06 atm, the charge is melted at a temperature of 732°C, the temperature is raised by 50°C and the crystal growing process is carried out by the method for horizontal directional crystallization at a horizontal boat pulling speed of 5 mm/h, after the crystallization process is completed, the grown crystal is annealed at a slow temperature decrease of ~ 10-15°/h.EFFECT: production of materials of CeBr3stoichiometric composition with a purity of 99.99% in the form of single-crystal samples or polycrystals.1 cl, 2 dwg, 3 ex |
| priorityDate | 2021-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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