Production of high-enriched carbon-13 by two-stage laser method
| Autor: | V. B. Laptev, S. V. Pigulsky, V. S. Mezhevov |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Journal of Physics: Conference Series. 1696:012016 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/1696/1/012016 |
| Popis: | A variant of a two-stage laser process for production highly enriched carbon-13 (13C) with a concentration of more than 99% is being investigated. The first laser stage provides effective enrichment of 13C up to 30-50% based on the isotopically selective multiphoton dissociation of freon-22 (CF2HCl) by pulsed radiation of a CO2 laser. Then the product of the first stage tetrafluoroethylene, enriched in 13C, is converted into the working substance of the second stage, freon-12B2 (CF2Br2). At the second stage of enrichment, a component with an undesirable isotope 12C undergoes to selective dissociation, until its concentration in the residual gas decreases to 1% and the concentration of the 13C isotope is increased to 99%. In preliminary experiments, high parameters of the elementary act of separation were achieved - the dissociation yield of the 12CF2Br2 up to 20% and selectivity (for 12C) up to 100. A productivity of the second enrichment stage for a reactor of ideal displacement is estimated, that is 0.6 and 1.2 g13C/h for initial concentrations of 13CF2Br2 30 and 50%, respectively. |
| Databáze: | OpenAIRE |
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