Optical Kerr effect of liquid and supercooled water: The experimental and data analysis perspective

Anno: 2014

Autori: Taschin A., Bartolini P., Eramo R., Righini R., Torre R.

Affiliazione autori: European Lab. for Non-Linear Spectroscopy (LENS), Univ. di Firenze, via N. Carrara 1, I-50019 Sesto Fiorentino, Firenze, Italy;
Istituto Nazionale Ottica, CNR, Largo Fermi 6, I-50125 Firenze, Italy;
Dip. di Chimica, Univ. di Firenze, via Della Lastruccia 13, I-50019 Sesto Fiorentino, Firenze, Italy;
Dip. di Fisica e Astronomia, Univ. di Firenze, via Sansone 1, I-50019 Sesto Fiorentino, Firenze, Italy

Abstract: The time-resolved optical Kerr effect spectroscopy (OKE) is a powerful experimental tool enabling accurate investigations of the dynamic phenomena in molecular liquids. We introduced innovative experimental and fitting procedures, that enable a safe deconvolution of sample response function from the instrumental function. This is a critical issue in order to measure the dynamics of liquid water. We report OKE data on water measuring intermolecular vibrations and the structural relaxation processes in an extended temperature range, inclusive of the supercooled states. The unpreceded data quality makes possible a solid comparison with few theoretical models: the multi-mode Brownian oscillator model, the Kubo

Giornale/Rivista: JOURNAL OF CHEMICAL PHYSICS

Volume: 141 (8)      Da Pagina: 084507  A: 084507

Maggiori informazioni: This work was supported by Regione Toscana, prog. POR-CRO-FSE-UNIFI-26, by Ente Cassa di Risparmio Firenze, prog. 2012-0584, and by MIUR, prog. PRIN-2010ERFKXL-004. We acknowledge M. De Pas, A. Montori, and M. Giuntini for providing their continuous assistance in the electronic set-ups and R. Ballerini and A. Hajeb for the mechanical realizations.
Parole chiavi: Dynamics; Optical Kerr effect; Structural relaxation; Supercooling, Brownian oscillators; Instrumental function; Intermolecular vibrations; Kerr effect spectroscopy; Lower temperatures; Molecular information; Response functions; Temperature range, Liquids
DOI: 10.1063/1.4893557

Citazioni: 22
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2025-05-04
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