Abstract
The kinetics of the photobaric and the photothermal components of the photoacoustic signal of spinach leaf-discs were measured simultaneously at two frequencies in one single experiment. This method avoids some of the problems associated with conventional single-frequency modulation, e.g. biological variability and repeatability. This communication shows that at modulation frequencies from 35 to 222 Hz the phase of the photobaric component remains constant during photosynthetic induction. This indicates that the photobaric component of the PA signal can be treated as a single component under the conditions used here.
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Abbreviations
- LED:
-
light emitting diode
- LIA:
-
lock-in amplifier
- PA:
-
photoacoustic
References
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© 1992 Springer-Verlag Berlin Heidelberg
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Snel, J.F.H., Polm, M.W., Buurmeijer, W.F., Vredenberg, W.J. (1992). Deconvolution of Photobaric and Photothermal Signals from Spinach Leaves. In: Bićanić, D. (eds) Photoacoustic and Photothermal Phenomena III. Springer Series in Optical Sciences, vol 69. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-47269-8_18
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DOI: https://doi.org/10.1007/978-3-540-47269-8_18
Publisher Name: Springer, Berlin, Heidelberg
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