A Low-Frequency Photoacoustic Spectrometer with an RGB Light-Emitting Diode for Evaluating Photosynthetic Activity in Plant Leaves
Э. А. ЗахидовInstitute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, 100125, Tashkent, UzbekistanА. М. КоххаровInstitute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, 100125, Tashkent, UzbekistanVakhobjon KuvondikovInstitute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, 100125, Tashkent, UzbekistanSherzod NematovInstitute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, 100125, Tashkent, UzbekistanI. I. TazhibaevInstitute of Ion-Plasma and Laser Technologies, Academy of Sciences of Uzbekistan, 100125, Tashkent, Uzbekistan
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Аннотация
A photoacoustic spectrometer based on a three-colored light-emitting diode (with peak emission wavelengths of 465, 525, and 640 nm) designed to determine the intensity of photosynthesis in different deep layers of plant leaves is described. The physical properties of the photoacoustic signal were studied at different wavelengths and light modulation frequencies. It was shown that the proposed spectrometer can be employed for quantitative evaluation of heat dissipation and photochemical assimilation of the absorbed light energy in this medium.
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