Isotope Enrichment Factors for Nitrogen-15 in the Nitric Oxide-Nitric Acid Exchange System
Single stange enrichment factors, alpha , for the isotope exchange reaction of nitrogen-15 between oxides of nitrogen and solutions of nitric acid have been determined by two different methods, Single stage equilibrations resulted in values of alpha that decrease from 1.065 for approximately lM HNO₃ to 1.045 for ll.lM HNO₃/. At high acid cocncentrations, alpha decreases rapidiy owing to high concentrations of NO₂ and N₂O₄ in the gas phase. Steady-state over-all separations in an exchange column at several rates of product withdrawal gave an independent determination for the l0M HNO₃ used in the preparation of highly enriched nitrogen-15. Data from the two methods result in a value for a of 1.055 plus or minus 0.005 for approximately 10M HNO₃ at 25 deg C. (auth)
- Research Organization:
- Columbia Univ., New York
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-13-016830
- OSTI ID:
- 4248583
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 1 Vol. 31; ISSN JCPSA6; ISSN 0021-9606
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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