Signatures of multiple time-scale behaviour in the power spectra of water

Mudi, Anirban ; Ramaswamy, Ramakrishna ; Chakravarty, Charusita (2003) Signatures of multiple time-scale behaviour in the power spectra of water Chemical Physics Letters, 376 (5-6). pp. 683-689. ISSN 0009-2614

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S00092...

Related URL: http://dx.doi.org/10.1016/S0009-2614(03)01006-6

Abstract

Power spectra associated with fluctuations in the tagged particle potential and kinetic energies are analysed for bulk SPC/E water for a range of temperatures along the 1.0 g/cm3 isochore. Fluctuations in the tagged particle potential energies give rise to 1/fα noise, indicative of multiple time-scale behaviour, over a temperature-dependent frequency regime. In contrast, the tagged particle centre-of-mass and rotational kinetic energies, which are indicative of the magnitude of local thermal fluctuations, do not show any evidence of 1/fα behaviour.

Item Type:Article
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ID Code:6061
Deposited On:19 Oct 2010 09:57
Last Modified:16 May 2016 16:28

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