• Experiments with flowing gases in an open photoacoustic cell

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    • Keywords


      Photoacoustic spectroscopy; open photoacoustic cell; flowing gases

    • Abstract


      A simple gas-microphone photoacoustic cell is described in which there is no sizable loss of signal on opening the cell to the atmosphere or even under conditions of gas flow. Results obtained under different rates of flow of gases and chopping frequencies are reported. Except for carbon black, the photoacoustic signal is found to be independent of flow-rate for all the solid substances studied.

    • Author Affiliations


      P Ganguly1 T Somasundaram1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

  • Journal of Chemical Sciences | News

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