An overview of time domain spectroscopy

Berberian, John G.; King, Edward E.

doi:10.1016/s0022-3093(02)01082-7

Cited by 30 publications

(19 citation statements)

References 4 publications

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“…The accurate determination of effective pin length d is very important for the accurate evaluation of dielectric parameters. It is found that for SMA type cell effective pin length [27] is greater than actual physical length by 0.1-0.2 mm. To reduce noise, time dependent response curve was averaged over 64 measurements taken and then stored in TDR oscilloscope memory with 1024 points per waveform.…”

Section: Tdr Set-up and Data Acquisitionmentioning

confidence: 85%

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Investigations of intermolecular interactions between 2-methoxyethanol and nitrobenzene through dielectric relaxation study

Sayyad¹,

Undre²,

Yannewar³

et al. 2011

Lithuanian J. Phys.

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Complex dielectric spectra ε * (ω) = ε − iε of binary mixture of 2-methoxyethanol with nitrobenzene were obtained in the frequency range of 10 MHz to 20 GHz over the volume fraction range 0 < v < 1 and at different temperatures of 288, 298, 308, and 318 K using the time domain reflectometry (TDR) technique. The static dielectric constant εs and relaxation time τ have been obtained. These values are used to obtain the excess permittivity ε E s , excess inverse relaxation time (1/τ ) E , Kirkwood correlation factor g eff , Bruggeman factor fB, and thermodynamic parameters. On the basis of above parameters, intermolecular interaction and dynamics of molecules at molecular level are predicated.

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Section: Tdr Set-up and Data Acquisitionmentioning

confidence: 85%

“…When cell is filled with sample above the physical length of inner conductor, the fringing effect [25,26] takes place. Due to the fringing field the effective pin length [27] will not be equal to physical pin length. The effective electrical pin length will be more than the physical pin length.…”

Section: Tdr Set-up and Data Acquisitionmentioning

confidence: 99%

Investigations of intermolecular interactions between 2-methoxyethanol and nitrobenzene through dielectric relaxation study

Sayyad¹,

Undre²,

Yannewar³

et al. 2011

Lithuanian J. Phys.

View full text Add to dashboard Cite

show abstract

“…The accurate determination of the effective pin length d is very important for the accurate evaluation of dielectric parameters. It is found that for SMA type cell, the effective pin length [9] is greater than the actual physical length by 0.1-0.2 mm.…”

Section: Tdr Set-up and Data Acquisitionmentioning

confidence: 89%

“…When the cell is filled with sample above the physical length of inner conductor, the fringing effect takes place [7,8]. Due to the fringing field, the effective pin length [9] will not be equal to the physical pin length. The effective electrical pin length will be greater than the physical pin length.…”

Section: Tdr Set-up and Data Acquisitionmentioning

confidence: 99%

Dielectric dispersion in 1,2-diaminopropane–dimethylaminoethanol mixtures as a function of composition and temperature

Undre¹,

Khirade²

2011

Lith. J. Phys.

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The dielectric dispersion ε' and dielectric loss ε" of binary mixture of 1,2-diaminopropane-dimethylaminoethanol were measured by employing the time domain reflectometry technique over a frequency range from 10 MHz to 20 GHz at 288, 298, 308, and 318 K temperatures. The accuracy in the measurement of the ε' and ε" values obtained from this technique is within ±5%. To evaluate various dielectric parameters, the frequency dependents complex permittivity (ε*(ω) = ε' -iε") data, viz., static permittivity ε 0 , relaxation time τ, and permittivity at high frequency ε ∞ were fitted by the nonlinear least-squares fit method to Debye expression. Temperature dependent ε 0 , τ, Kirkwood correlation factor g, free energy of activation ΔG, and enthalpy of activation ΔH have been determined and discussed in terms of the effect of -NH 2 and -CH 3 side-group on molecular dynamics and intermolecular hydrogen bonds. The dielectric behaviour of 1,2-diaminopropane and dimethylaminoethanol liquid molecules and their conformations as well as molecular dynamics of the system can be explored only by comparing the dielectric data of the mixture system with the dielectric data of the individual molecules and their dynamics.

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“…When cell is filled with sample above the physical length of inner conductor, the fringing effect 14,15 takes place. Due to the fringing field the effective pin length 16 will not be equal to physical pin length. The effective electrical pin length will be more than the physical pin length.…”

Section: Methodsmentioning

confidence: 99%

Study of Dynamics of Allyl Chloride-2-Butanone Binary System Using Time Domain Reflectometry

Sudake¹,

Kamble²,

Patil³

et al. 2012

Journal of the Korean Chemical Society

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ABSTRACT. Complex permittivity spectra of Allyl Chloride (AC), 2-Butanone (2-BU) and their binary mixtures over the entire range of concentration were obtained using the Time Domain Reflectometry (TDR) technique in microwave frequency range at various temperatures. Static dielectric constant and relaxation time are obtained from complex permittivity spectra. Density (ρ) and refractive index (nD) are also measured. These parameters are used to determine excess dielectric constant, excess inverse relaxation time, excess molar volume, excess molar refraction, polarity, Bruggeman factor and thermodynamic parameters viz. enthalpy of activation and entropy of activation. The values of static dielectric constant and relaxation time increases while density and refractive index decreases with the percentage of 2-Butanone in Allyl Chloride increases. Excess parameters were fitted to a Redlich-Kister equation.

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An overview of time domain spectroscopy

Cited by 30 publications

References 4 publications

Investigations of intermolecular interactions between 2-methoxyethanol and nitrobenzene through dielectric relaxation study

Investigations of intermolecular interactions between 2-methoxyethanol and nitrobenzene through dielectric relaxation study

Dielectric dispersion in 1,2-diaminopropane–dimethylaminoethanol mixtures as a function of composition and temperature

Study of Dynamics of Allyl Chloride-2-Butanone Binary System Using Time Domain Reflectometry

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