K V Sinha
Articles written in Pramana – Journal of Physics
Volume 23 Issue 2 August 1984 pp 235-243 Atomic And Molecular Physics
The drift velocities of positrons in rare gases, He, Ne and Ar have been calculated at various temperatures. The drift velocity depends quite sensitively on the strength of the electric field and temperature.
Volume 25 Issue 5 November 1985 pp 539-546 Atomic And Molecular Physics
We have performed a computer-aided analysis of position behaviour in atomic hydrogen. Effect of electric, magnetic and temperature fields on the diffusion and annihilation of positrons has been studied. Electric field is varied over a wide range of 0–200 V cm−1 amagat−1, magnetic field over 0–30 kG while the temperature range considered is 300–10,000°K. The position decay rate decreases with electric and temperature fields but increases with magnetic fields. However, the effect of these fields is reversed on the diffusion coefficient.
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