Journal
APPLIED OPTICS
Volume 48, Issue 4, Pages B57-B64Publisher
OPTICAL SOC AMER
DOI: 10.1364/AO.48.000B57
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A two-dimensional laser Raman technique was developed and applied to directly probe the population number of selected rotational and vibrational energy levels of hydrogen and nitrogen. Using three cameras simultaneously, temperature and mole fraction images could be detected. Three different combinations of rotational and vibrational Raman signals of hydrogen and nitrogen were analyzed to identify the combination that is most suitable for future mixture analysis in hydrogen internal combustion engines. Here the experiments were conducted in an injection chamber where hot hydrogen was injected into room temperature nitrogen at 1.1 MPa. (C) 2008 Optical Society of America
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