Useful techniques and procedures for derermination of absorbed
doses from exposure in a low-energy beta radiation were studied
and evaluated. The four techniques included were beta
spectrometry, extrapolation chamber dosimetry, Monte Carlo (MC)
calculations, and exoelectron dosimetry. As a typical low-energy
beta radiation field a moderated spectrum from a carbon-14 source
was used. The measured responce of a Si(Li) detector to photons
(bremsstrahlung) showed fine agreemant with the MC calculated
photon response, whereas the difference between measured and MC
calculated response to electrons indicated an additional deadlayer
thickness of about 12 micrometer in the Si(Li) detector.