A radiotracer system for119mSn using time-interval analysis

11 September 1975

journal article
Published by IOP Publishing in Journal of Physics D: Applied Physics

Vol. 8 (13) , 1600-1614
https://doi.org/10.1088/0022-3727/8/13/023

Abstract

The application of time-interval analysis to the detection of the isotope ^119mSn is described. This is thought to be the first time that the technique has been used to detect an isotope with such a short half-life (19 ns) and such low energy radiation (119mSn radiation. In spite of this the counting system developed will measure ^119mSn radiation. In spite of this the counting system developed will measure ^119mSn activities within the range 3 mu Ci to 1 pCi. The lower limit corresponds to a mass of 2*10^-12g of tin at a specific activity of 400 mCi g^-1. In this investigation tin radiotracer was diffused into tin-doped GaAs substrates under strictly controlled conditions typical of those experienced during growth by liquid-phase epitaxy, and diffusion profiles were measured.

Keywords

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