The Role of Column Calibration Factor in the Study of Temperature Dependence of Thermal Diffusion Factor of Hydrogenic Trace Mixtures with Helium

Acharyya, S.; Saha, Indranil; Datta, Anup; Chatterjee, Arindam

doi:10.1143/jpsj.56.105

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…They are shown in figure 3 together with the experimental F s /L obtained from ln q max and known α T values of Ne 20 -Ne 22 gas mixtures. F s /L of equation ( 14) plays an important role in determining α T of any binary gas mixture [1][2][3][4]. Because its model independence is well established [3], F s /L can safely be used to concentrate impurities of any gas to any desired level in TDC experiments.…”

Section: The Theoretical Formulation Of the Column Calibration Factormentioning

confidence: 99%

“…In the absence of a theoretical possibility of estimating the actual experimental α T from the existing column theory, Acharyya et al [1] and Datta et al [2], however, introduced a scaling factor F s called the column calibration factor (CCF) into the relation: ln q max = α T F s (r c , r h , L, T ).…”

Section: Introductionmentioning

confidence: 99%

“…Here ln q max is the maximum value of ln q e at the optimum pressure and q e is the equilibrium separation factor. Although, the model independency of F s is well established [3] for its important role in the estimation of reliable α T [1][2][3][4], the functional relationship of F s with r c , r h , L and T remains unknown. 1 by the least square fitted curves for these columns.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The functional relationship of the column calibration factor in thermal diffusion column measurement

Dasgupta

Acharyya

1998

J. Phys. D: Appl. Phys.

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An approximate formulation of the column calibration factor (CCF), , at any given temperature is derived for thermal diffusion columns (TDC) from the Navier-Stokes equation in cylindrical coordinates. The values of are then used to estimate the experimental thermal diffusion factor of a neon gas mixture with its natural isotopic abundances from measured in four columns of different column geometries. The molecular force parameters of the molecule are estimated from the intercepts and slopes of the linear variations of and the collision integral against and respectively. The excellent agreement of the estimated force parameters with the available literature values and the comparison of the temperature variation of by the CCF method with the existing experimental and theoretical ones establish the fact that the derived relationship of with the column geometries is more than adequate.

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