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MARTIAN MULTICHANNEL DIODE LASER SPECTROMETER EXPERIMENT FOR THE EXOMARS-2022 LANDER MISSION: M-DLS INSTRUMENT FABRICATION AND LABORATORY CALIBRATION RESULTSстатья
- Авторы: Vinogradov I., Barke V., Budovaya A., Gazizov I., Golovnin I., Kazakov V., Kozlova T., Lebedev Yu, Malashevich S., Meshcherinov V., Nosov A., Rodin A., Roste O., Spiridonov M., Tepteeva E., Venkstern A., Zenevich S., Ghysels-Dubois M., Durry G., Bizien L.
- Сборник: THE ELEVENTH MOSCOW SOLAR SYSTEM SYMPOSIUM 11M-S3. october 5-9, 2020 SPACE RESEARCH INSTITUTE OF RUSSIAN ACADEMY OF SCIENCES
- Год издания: 2020
- Место издания: MOSCOW, RUSSIA
- Первая страница: 91
- Последняя страница: 91
- Номер статьи: 11MS3-MS-PS-11
- Аннотация: Martian multichannel diode laser spectrometer (M-DLS) experiment for the ExoMars-2022 mission is aimed in continuous study of atmosphere near the Martian surface at the location of the EM-2022 stationery landing platform during one Martian year. Compact and lightweight M-DLS instrument was fabricated and has been successively delivered on-board of the EM-2022 landing platform. M-DLS laboratory calibrations confirmed advantage of tunable diode laser absorption spectroscopy (TDLAS) combination with integrated cavity output spectroscopy (ICOS) for fine measurement of weak absorption lines of a gas sample, to be taken from the low-pressure ambient Martian atmosphere. H2O and CO2 molecular content and isotopic ratio variations of D/H, 18O/17O/16O, 13C/12C will be retrieved from recorded and sent back to Earth absorption data. M-DLS experimental results would help for further understanding of physics and chemistry of interactions between surface and atmosphere of Mars.Current activity of the research team is concentrated on proper telemetrical control of the M-DLS instrument operation and of its on-board interfacing; on correct use of M-DLS instrumental functions, including ICOS-specific ones, for accurate treatment of high-resolution optical transmission spectra for monochromatic light passing through the gas-filled analytical cell sensor; and on spectral database accurate experimental verification at the M-DLS work ranges of 2656 nm (H2O isotopologues) and 2808 nm (CO2 isotopologues) for adequate fitting of recorded absorption spectra, and for resulting sub-percent accuracy for retrieving values of D/H, 18O/17O/16O, 13C/12C ratios and H2O, CO2 content.
- Добавил в систему: Головнин Илья Владимирович