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  • Title: A virtual experiment control and data acquisition system for in situ laser heated diamond anvil cell Raman spectroscopy.
    Author: Subramanian N, Struzhkin VV, Goncharov AF, Hemley RJ.
    Journal: Rev Sci Instrum; 2010 Sep; 81(9):093906. PubMed ID: 20886993.
    Abstract:
    Doubled-sided laser heated diamond anvil cell methods allow simultaneous in situ confocal Raman measurements of materials up to megabar pressures and high temperatures. This paper describes a virtual control and data acquisition system developed to automate setups for simultaneous Raman/laser heating experiments. The system enables reduction of experiment time by ∼90% in comparison to manual operations, allowing measurements of high quality Raman spectra of even highly reactive or diffusive samples, such as hydrogen at extreme conditions using continuous wave laser heating. These types of measurements are very difficult and often impossible to obtain in a manual operation mode. Complete data archiving and accurate control of various experimental parameters (e.g., on-the-fly temperature determination and self-adjusting data collection time to avoid signal saturation) can be done, and open up possibilities of other types of experiments involving extreme conditions.
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