Bremsstrahlung from 90Sr-90Y in Thin Absorbers
- 1 March 1967
- journal article
- research article
- Published by Taylor & Francis in Nuclear Science and Engineering
- Vol. 27 (3) , 586-596
- https://doi.org/10.13182/nse86-a17626
Abstract
The Internal bremsstrahlung from 90Sr−90Y and the external bremsstrahlung yields in various target materials were measured, using a novel experimental approach. The bremsstrahlung targets employed consisted of materials from atomic numbers 13 to 73 and ranged in thickness from 4 mg/cm2 past the range of the 90Y beta particles. The experiment performed by means of pulse-height scintillator spectrometric techniques enabled the observation and semiempirical calculation of how the bremsstrahlung spectrum builds up and is simultaneously attenuated, as well as the corresponding changes in the beta spectrum transmitted by the absorbers. This approach allows determination of generated bremsstrahlung spectra without having to make large attenuation corrections to thick target data.A brief description of internal bremsstrahlung and the theoretical aspects of external bremsstrahlung generation is given. Although there are several thick-target theories, only the Evans approximation to thick-target external br...Keywords
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