Evidence of Saturn's magnetic field anomaly from Saturnian kilometric radiation high-frequency limit

1991 ◽  
Vol 96 (A8) ◽  
pp. 14129-14140 ◽  
Author(s):  
Patrick Galopeau ◽  
Arturo Ortega -Molina ◽  
Philippe Zarka
Keyword(s):  
Magnetic Field ◽  
High Frequency ◽  
Frequency Limit ◽  
High Frequency Limit

The Anomalous Spectral Density Function for Diffusive Motion of Hydrogen in LaNi5H7

1980 ◽  
Vol 3 ◽  
Author(s):  
H. Chang ◽  
I. J. Lowe ◽  
R. J. Karlicek
Keyword(s):  
Magnetic Field ◽  
Spectral Density ◽  
Density Function ◽  
High Frequency ◽  
Diffusion Constant ◽  
Spectral Density Function ◽  
Rotating Magnetic Field ◽  
Frequency Limit ◽  
Diffusive Motion ◽  
High Frequency Limit

ABSTRACTMeasurements of T1 (Bo = 0.94T), and T1r as a function of temperature have been carried out on a LaNi5H7 sample at 4 different rotating magnetic field values. The T1 and T1r data are consistent with earlier data by Karlicek and Lowe [3,4], in which an asymmetry in the slopes of the log T1r vs. T−1 plot was found. The new data has been analyzed assuming a spectral density function J(ω,τc) of form J(ω, τc) = A(τc)B(Ω)F(ωτc), with τc = τc∞ exp(Ea/kT). This assumption leads to a spectral density function that fits all our data well, with Ea = 39 KJ/gm-Atom H, and J(ω)∼ Wω−1.35 in the high frequency limit. This Ea agrees well with the Ea obtained from diffusion constant measurements.

scholarly journals Quantifying the dispersion quality of partially aggregated colloidal dispersions by high frequency rheology

Soft Matter ◽  
2017 ◽  
Vol 13 (43) ◽  
pp. 7897-7906 ◽  
Author(s):  
Bram Schroyen ◽  
James W. Swan ◽  
Peter Van Puyvelde ◽  
Jan Vermant
Keyword(s):  
High Frequency ◽  
Colloidal Dispersions ◽  
Frequency Limit ◽  
Hydrodynamic Stress ◽  
High Frequency Limit ◽  
Dispersion Quality

The dispersion quality of colloidal dispersions is quantified by analysing the hydrodynamic stress contributions in the high frequency limit.

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