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Design, development, and testing of an environmental P-T cell for infrared spectroscopy measurements

TitleDesign, development, and testing of an environmental P-T cell for infrared spectroscopy measurements
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2018
AuthorsDe Angelis, S., Ferrari M., De Sanctis M.C., Biondi D., Boccaccini A., Morbidini A., Formisano M., Ammannito E., and Di Iorio Tatiana
JournalReview of Scientific Instruments
Volume89
ISSN00346748
KeywordsAdsorbed molecules, article, controlled study, Effect of pressure, Environmental cells, heating, Infrared devices, Infrared spectroscopic, infrared spectroscopy, Near infrared spectra, Near infrared spectroscopy, Pressure-temperature conditions, Reflectance spectrum, Reflection, Spectroscopy measurements, T lymphocyte, T-cells, vacuum, Water absorption
Abstract

Water absorption bands due to superficially adsorbed molecules often dominate the near-infrared spectra of particulate minerals and rocks, when measured in the laboratory in the reflectance mode. In order to remove this, the spectral effect is thus necessary to acquire spectra of samples in vacuum and at higher temperatures. With the aim to accomplish this task, we developed an environmental cell to perform infrared spectroscopic measurements at controlled pressure-temperature conditions. Currently the cell allows one to measure reflectance spectra in the temperature range from room values up to 300 °C (573 K), in the pressure range of 103-10-6 mbar. The acquisition of spectra continuously in two distinct phases, namely, during a preliminary pumping stage (at room T) and subsequently during a heating stage (in vacuum), permits to highlight and characterize separately the effect of pressure and temperature on infrared spectra. © 2018 Author(s).

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85055112781&doi=10.1063%2f1.5047038&partnerID=40&md5=24334adc177d21bc68121210f4f11872
DOI10.1063/1.5047038
Citation KeyDeAngelis2018