Nuclear Science and Engineering / Volume 18 / Number 1 / January 1964 / Pages 90-96
Technical Paper / dx.doi.org/10.13182/NSE64-A18143
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Calculations of the ionization density resulting from β-ray fluxes produced by the decay of UX2 (Pa234m) using constant-cross-section transport theory agree with experiment to better than 5%. The ionization densities were measured using an extrapolation chamber and a thin-walled ionization chamber. The experimental β-ray absorption coefficients reported in 1931 by the International Radium-Standards Commission can be calculated to better than 15% using the same theory.