Coherent laser spectroscopy of RF resonances in liquid |
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Authors: | A F Bunkin S M Pershin |
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Institution: | (1) Wave Research Center, Prokhorov General Physics Institute, Russian Academy of Sciences, ul. Vavilova 38, Moscow, 119991, Russia |
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Abstract: | Four-photon polarization spectra of double distilled water subjected to a special treatment in a cavitation chamber and 20%
aqueous solution of hydrogen peroxide were recorded in the range ±8 cm−1. All recorded spectra contain narrow (< 0.3 cm−1) resonances corresponding to the frequencies of the rotational spectrum of ortho and para spin isomers of the H2O molecule. Numerical simulation of the spectra obtained made it possible to quantitatively estimate the contribution of the
rotational spectrum to the coherent scattering signal. It was found that the contribution of the para spin isomer of the H2O molecule to the rotational line spectrum decreases in an aqueous solution of the α-chymotrypsin protein. Apparently, this decrease indicates the selectivity of interaction of biopolymer molecules with different
spin isomers. |
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