Abstract
WE have utilized lead-210 isotope and surface-counting technique to evaluate the self-diffusion coefficient of lead in lead oxide. Since lead-210 has a very weak β-emission (0.025 MeV) it is wellnigh impossible to estimate the activity with the conventional Geiger–Müller counters. Furthermore, µ, the absorption coefficient, is so high that the radiations from within the bulk material do not penetrate the layers. However, we have successfully surmounted the difficulty by depositing lead-210 on one face of a pellet, allowing the daughter to build up, and following the movement of lead-210 by determining the amount of bismuth-210. We present here the relevant mathematical treatment and results.
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References
Palkar, G. D., Sitharamarao, D. N., and Das Gupta, A. K., Trans. Faraday Soc., 59, 2634 (1963).
Lindner, R., J. Chem. Soc., S365 (1949).
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DAS GUPTA, A., SITHARAMARAO, D. & PALKAR, G. Self-diffusion of Lead in Lead Oxide (PbO). Nature 207, 628–629 (1965). https://doi.org/10.1038/207628a0
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DOI: https://doi.org/10.1038/207628a0
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