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Production of germanium stable isotopes single crystals
Author(s) -
Churbanov Mihail Fedorovich,
Gavva Vladimir A.,
Bulanov Andrey D.,
Abrosimov Nikolay V.,
Kozyrev Eugeniy A.,
Andryushchenko Ivan A.,
Lipskii Victor A.,
Adamchik Sergey A.,
Troshin Oleg Yu.,
Lashkov Artem Yu.,
Gusev Anatoly V.
Publication year - 2017
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201700026
Subject(s) - germanium , isotope , germanium compounds , isotopes of germanium , stable isotope ratio , production (economics) , materials science , chemistry , crystallography , radiochemistry , silicon , nuclear physics , physics , optoelectronics , decay scheme , gamma ray , economics , macroeconomics
It is reported on production of germanium stable isotopes 72 Ge, 73 Ge, 74 Ge, 76 Ge single crystals with high isotopic and chemical purity by hydride method. Separation of isotopes was carried out by centrifugal method using monogermane as the initial volatile substance. Samples of monoisotopic monogermanes 72 GeH 4 , 73 GeH 4 , 74 GeH 4 , 76 GeH 4 were purified by the method of low‐temperature rectification. Elementary polycrystalline germanium was extracted by pyrolysis from respective monogermane and purified from impurities by the method of zone melting. Single crystals of germanium isotopes were grown by Czochralski method. The content of the main isotope in the produced single crystals 72 Ge, 73 Ge, 74 Ge, 76 Ge was 99.98; 99.90; 99.93 and 87.5 at. %, respectively, and the content of the impurities of stable elements was less than 10 −5 –10 −6 mass %.