Induced radioactivity analyser - moving sample from isotope to detector at two different speeds

摘要

An analyser for the compsn. of samples, based on measuring the induced radioactivity by radiation with a radio-isotope includes a horizontal arm for the sample which is revolved to pass from under the radiation source to under the detector. The measurement is carried out at two different speeds. One is adjusted to reduce the effect of the isotope to practically zero, and one is such that the activation effect is present. This system eliminates any falsification of the readings by the interference radiation of any isotopes which are present in the sample but are not to be determined at the time.