X-Ray Fluorescence Correlation Spectroscopy: A Method for Studying Particle Dynamics in Condensed Matter

Journal Article · Sun Feb 01 00:00:00 EST 1998 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.80.1110· OSTI ID:574002

Wang, J; Sood, A K; Satyam, P V; Feng, Y; Cai, Z; Yun, W; Sinha, S K ^[1]; Wu, X; Wu, X ^[2]; Silva, C; Walhout, P K; Yokoyama, K; Barbara, P F ^[3]

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1. Experimental Facilities Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

We have demonstrated that x-ray fluorescence correlation spectroscopy, in conjunction with microfocused synchrotron x-ray beams, can be used for elucidating particle dynamics. The dynamics of gold and ferromagnetic colloidal particles and aggregates undergoing both diffusion and sedimentation in water has been studied by measuring the time autocorrelation of the x-ray fluorescence intensity from a small illuminated volume. The dynamical parameters obtained are in excellent agreement with theoretical estimates and other measurements. Potential applications of the technique are discussed. {copyright} {ital 1998} {ital The American Physical Society}

• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 574002
• Journal Information: Physical Review Letters, Vol. 80, Issue 5; Other Information: PBD: Feb 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
X-RAY FLUORESCENCE ANALYSIS
SYNCHROTRON RADIATION
GOLD
COLLOIDS
DYNAMICS
FERROMAGNETIC MATERIALS
CORRELATION FUNCTIONS
SEDIMENTATION
DIFFUSION