Rotation of large molecular ions and transient dielectric relaxation effects

2005 ◽  
pp. 208-219
Author(s):  
Kenneth G. Spears
Keyword(s):  
Dielectric Relaxation ◽  
Molecular Ions ◽  
Relaxation Effects

On the relationship between matric potential and dielectric properties of organic free soils: a sensitivity study

2009 ◽  
Vol 46 (10) ◽  
pp. 1202-1215 ◽  
Author(s):  
Norman Wagner ◽  
Alexander Scheuermann
Keyword(s):  
Dielectric Relaxation ◽  
Low Frequency ◽  
Bound Water ◽  
Frequency Dispersion ◽  
Strong Relationship ◽  
Sensitivity Study ◽  
Relative Dielectric Permittivity ◽  
Relaxation Processes ◽  
Matric Potential ◽  
Relaxation Effects

High-frequency electromagnetic determination of moisture in porous media, (e.g., soil) is based on the strong relationship between volumetric water content and relative dielectric permittivity. In particular, in fine-grained soils the movement of water is influenced by different surface-bonding forces due to interface processes. The interface effects lead to a number of dielectric relaxation processes (free- and bound-water phase, Maxwell–Wagner effect, counterion relaxation effects). These relaxation processes are the reason for the strong frequency dependence of the electromagnetic material properties below 1 GHz. The matric potential is a measure of the bonding forces on water in the soil. Based on a thermodynamic relationship between soil matric potential and dielectric relaxation behaviour of water in different binding states, a broadband dielectric relaxation model was developed that considers low-frequency dispersion up to 1 MHz as well as losses due to direct-current conductivity. The sensitivity of the model on soil suction was systematically analyzed based on a pedotransfer function (PTF) for soil textures ranging from pure sand up to pure clay. The results are compared with known empirical and semiempirical calibration functions, as well as theoretical mixing models.

DIELECTRIC RELAXATION EFFECTS IN A METAL‐OXIDE‐PLASMA CAPACITOR

1967 ◽  
Vol 10 (1) ◽  
pp. 27-29 ◽  
Author(s):  
Robert A. Olson ◽  
G. Medicus
Keyword(s):  
Metal Oxide ◽  
Dielectric Relaxation ◽  
Relaxation Effects ◽  
Plasma Capacitor

Dielectric relaxation effects on permittivity of surface soils

2005 ◽  
Author(s):  
Marcel G. Schaap ◽  
Jan M. H. Hendrickx
Keyword(s):  
Dielectric Relaxation ◽  
Surface Soils ◽  
Relaxation Effects

Intramolecular donor-acceptor systems. 7. Solvent dielectric relaxation effects on the photophysics of 6-(phenylamino)-N,N-dimethyl-2-naphthalenesulfonamides

1983 ◽  
Vol 87 (14) ◽  
pp. 2479-2484 ◽  
Author(s):  
E. M. Kosower ◽  
H. Kanety ◽  
H. Dodiuk ◽  
G. Striker ◽  
T. Jovin ◽  
...  
Keyword(s):  
Dielectric Relaxation ◽  
Relaxation Effects ◽  
Donor Acceptor

ChemInform Abstract: INTRAMOLECULAR DONOR-ACCEPTOR SYSTEMS. 7. SOLVENT DIELECTRIC RELAXATION EFFECTS ON THE PHOTOPHYSICS OF 6-(PHENYLAMINO)-N,N-DIMETHYL-2-NAPHTHALENESULFONAMIDES

1983 ◽  
Vol 14 (43) ◽  
Author(s):  
E. M. KOSOWER ◽  
H. KANETY ◽  
H. DODIUK ◽  
G. STRIKER ◽  
T. JOVIN ◽  
...  
Keyword(s):  
Dielectric Relaxation ◽  
Relaxation Effects ◽  
Donor Acceptor

Absence of dielectric relaxation effects on intramolecular electron transfer in porphyrin-quinone cyclophanes

1992 ◽  
Vol 198 (6) ◽  
pp. 645-652 ◽  
Author(s):  
F. Pöllinger ◽  
H. Heitele ◽  
M.E. Michel-Beyerle ◽  
C. Anders ◽  
M. Futscher ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Dielectric Relaxation ◽  
Intramolecular Electron Transfer ◽  
Relaxation Effects

Radiation less transitions in gas phase molecular ions

1980 ◽  
Vol 77 ◽  
pp. 705-718 ◽  
Author(s):  
Sydney Leach ◽  
Gérald Dujardin ◽  
Guy Taieb
Keyword(s):  
Gas Phase ◽  
Molecular Ions

Relaxation effects in mössbauer transmission and scattering. II Introduction of relaxation

1976 ◽  
Vol 37 (5) ◽  
pp. 549-556 ◽  
Author(s):  
F. Hartmann-Boutron
Keyword(s):  
Relaxation Effects

RELAXATION EFFECTS IN FLUORINE K AUGER AND PHOTOELECTRON SPECTRA

1987 ◽  
Vol 48 (C9) ◽  
pp. C9-247-C9-250
Author(s):  
O. BENKA ◽  
M. UDA
Keyword(s):  
Photoelectron Spectra ◽  
Relaxation Effects
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