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Calculation of Drift Velocities and Diffusion Coefficients for Xe+ Ions in Gaseous Xe/3He Mixtures

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2 Author(s)
Barata, J.A.S. ; Univ. da Beira Interior, Covilha ; Conde, C.A.N.

The drift velocities and the longitudinal and transverse diffusion coefficients for Xe+ ions in gaseous Xe/3He mixtures, at atmospheric pressures, for Xe concentrations between 1 and 30%, and reduced electric field strengths, from about 3 to 70 Td, corresponding to E/p, from about 1 to 22.5 V cm-1Torr-1 at 300 K, are calculated by simulation using a detailed Monte Carlo computer programme. This programme uses a set of integral and differential elastic collision cross sections for Xe ions with neutral He and Xe atoms, previously calculated by the authors using a modified Tang-Toennies ion-atom interaction potential and the JWKB approximation to calculate the phase shifts. The calculated drift velocities of Xe+ ions depend strongly on the concentration of Xe in the mixtures.

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Nuclear Science, IEEE Transactions on  (Volume:54 ,  Issue: 3 )