A setup for studying fractionation of D/H isotopes under low-temperature water sublimation in vacuum
Krivenko A. P.1, Sevastianov V. S.1, Voropaev S. A.1
1V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry, Moscow, Russia
Email: krivenko.ap@yandex.ru
The paper presents a setup for studying fractionation of D/H isotopes during water ice sublimation under the lunar surface conditions. We have examined the influence of the source water volume on the parameters of analytical signal from the mass spectrometric complex. Water vapor loss and isotopic composition variation during the sample motion from the experimental setup reactor to the mass spectrometric complex were assessed. Optimal parameters of vapor accumulation under water ice sublimation were determined. The experimental procedure was verified. Keywords: stable isotopes, fractionation, sublimation, mass spectrometry, water, ice, minerals, regolith, Moon.
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