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Bispectral analysis as a probe of quasielastic light scattering intensity fluctuations

dc.contributor.authorPhillies, George D. J.en_US
dc.date.accessioned2010-05-06T22:51:31Z
dc.date.available2010-05-06T22:51:31Z
dc.date.issued1980-06-01en_US
dc.identifier.citationPhillies, George D. J. (1980). "Bispectral analysis as a probe of quasielastic light scattering intensity fluctuations." The Journal of Chemical Physics 72(11): 6123-6133. <http://hdl.handle.net/2027.42/70880>en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/70880
dc.description.abstractThe bispectrum ⟨I(0)I(t)I(τ)⟩ of the intensity I of light scattered quasielastically from a fluid system is shown to be a potentially useful tool for studying complex fluids. Bispectra and time cumulants are calculated, in the time domain, for systems with 1, 2, or many diffusing components, treating separately the consequences of homodyne and heterodyne detection at times 0, t, and τ. The experimentally accessible cumulants of the all‐homodyne bispectrum distinguish between systems with exactly two relaxation times and systems with more than two relaxation times. The signal‐to‐noise ratio in a bispectral measurement is shown to be proportional to T1/2, T being the integration time. Clipped scaling of the heterodyne intensity I(t) allows study of the odd powers ⟨‖ak(0)a∗k(t)ak(τ)‖⟩ of the density correlations.en_US
dc.format.extent3102 bytes
dc.format.extent807852 bytes
dc.format.mimetypetext/plain
dc.format.mimetypeapplication/pdf
dc.publisherThe American Institute of Physicsen_US
dc.rights© The American Institute of Physicsen_US
dc.titleBispectral analysis as a probe of quasielastic light scattering intensity fluctuationsen_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelPhysicsen_US
dc.subject.hlbtoplevelScienceen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumDepartment of Chemistry, The University of Michigan, Ann Arbor, Michigan 48109en_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/70880/2/JCPSA6-72-11-6123-1.pdf
dc.identifier.doi10.1063/1.439069en_US
dc.identifier.sourceThe Journal of Chemical Physicsen_US
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dc.owningcollnamePhysics, Department of


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