Standardization of 204Tl and 89Sr at VNIIM.

D.I. Mendeleyev Institute for Metrology (VNIIM) participated in two international comparisons of 204Tl and 89Sr solutions organized by the BIPM.

[Volumetric standard sources for the metrological certification of spectrometers for measuring human internal irradiation].

The system of metrological measurements using spectrometers of human radiation (SHR) envisages the development, investigation and attestation of sources of volumetric activity simulating an object of investigation. The authors devised a unified solid-body phantom, representing a set of standard volumetric sources in the form of rectangular modules and a method of their distribution. When assembled, the phantom imitates the human body containing a radionuclide, regularly distributed by the volume.