[Adsorption and desorption of the radionuclide 133Xe on carbon adsorbents with varying porous structures]. / Issledovanie adsorbtsii i desorbtsii radionuklida 133Xe na uglerodnykh adsorbentakh s razlichnoi poristoi strukturoi.

The paper concerns adsorbents with different porosity intended for adsorption of gaseous 133Xe from the flow of a gas-air mixture exhaled by the patient undergoing the diagnosis, for instance, of the pulmonary system or cerebral blood flow. The data obtained were visualized on a gamma-chamber. An adsorbent exhibiting the highest adsorption capacity was selected. It has been shown that transport porosity of adsorbents does not play any significant role in adsorption of gaseous 133Xe. During adsorption, a much greater role is played by binding energy.

[Kinetics of the clearance of 133Xe in cerebral diagnosis and a basis for the construction of a xenon regeneration unit]. / Issledovanie kinetiki vyvedeniia 133Xe pri diagnostike golovnogo mozga i obosnovanie konstruktsii ustanovki regeneratsii ksenona.

A methodological approach to the design of a xenon regeneration unit is described. The kinetics of post-inhalation elimination of 133Xe nuclide was studied. The reduction of the nuclide initial activity in the Spirograph was tested in several patients. The statistical model of this process is created. The basic scheme of the xenon regeneration unit and the phased operation of the unit in absorption and regeneration modes are described.