Four-photon spectroscopy of ortho/para spin-isomer H2O molecule in liquid water in sub-millimeter range

✍ Scribed by A. F. Bunkin; S. M. Pershin; A. A. Nurmatov

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 115 KB
• Volume: 3
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200610007

✦ Synopsis

H~2~O molecules coherent librations in Milli-Q
water and aqueous solution of α-hymotripsin protein in
sub-millimeter range (70–90 cm^-1^) are observed by four
photon scattering technique for the first time. Perfect
correlation of detected resonances with rotational spectrum of
H~2~O molecules in gas phase is found. Moreover a few lines of
H~2~O molecules ortho- and para- isomers were identified. The
presence of α-hymotripsin molecules in water directs to an
essential gain of the four-photon signal. It was found that the
protein molecule in aqueous solution interacts selectively with
para-isomers of H~2~O molecules.