In an attempt to link the photoacoustic effect to the Michelson fringe shift as a result of changes in the cell, we present photoacoustic (PA) signal detection in a cell positioned within the Michelson interferometer cavity. IR absorption was used to evaluate both detection systems, and their sensitivities were compared. The absorbed energy is released as a localised pressure wave, or sound wave, in photoacoustic spectroscopy (PA). Using a range of materials, including essential oils and the plant components from which they are commonly harvested, signals linked to the Michelson interferometer fringe and the PA effect have demonstrated excellent connections with each other. The results were promising, and they will pave the way for the widespread use of the combined Michelson interferometer-photoacoustic spectroscopy (PAS) in trace gas detection for a variety of applications. In the realm of portable trace gas detection systems, simultaneous detection of both signals using the new combination technology offers an alternative to expensive lasers, which are replaced by a low-cost wideband-pulsed IR source with good capabilities.
Mohammad I. Abu Taha,
Physics Department, College of Science and Technology, Al-Quds University, Jerusalem, Palestine.
Ahmed S. Jabr,
The School of Science Research, Al Qusais, Dubai, United Arab Emirates.
Please see the link here: https://stm.bookpi.org/NTPSR-V3/article/view/6825
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