Studies have been carried out of an MHD stable rotating plasma with the following parameters: mean ion energy up to 40 keV in the laboratory frame of reference or up to 20 keV in the rotating frame of reference, plasma density 3 × 1011 cm−3 (and up to 1012 cm−3 in special regimes), mean energy of electrons 0.1−1.0 keV (non-Maxwellian spectrum), lifetime of ions 10−4 s (determined by charge exchange), and plasma volume 0.1 m3, in experiments on the PSP-2 device. The field strength in the plasma was about 20 kV/cm, and the total voltage achieved 0.5 MV. The MHD stabilization conditions are in agreement with the theoretical estimates. A hot plasma was created in a high voltage E⃗ × B⃗ discharge, the cold hydrogen gas having been puffed without any heating or plasma injection systems.

A complex of equipment was designed for taking xenon samples from the ambient air, measuring concentrations of radioactive xenon isotopes ( 131 m Xe, 133 m Xe, 133 Xe, and 135 Xe), and transmitting results in the automatic mode. Xenon is extracted from the air stream using low-temperature adsorption on activated charcoal. Radiochemical purification of the adsorbed xenon is based on thermal desorption in a helium stream and the passage of gases liberated by the adsorber through a system of traps. The radionuclide concentrations in xenon samples are determined using the βγ coincidence method. When processing air samples of volume 12 m 3 and measuring their spectra over 10 h, the minimum detectable concentration of the prevailing radionuclide ( 133 Xe) in the air is no greater than 0.5 mBq/m 3 . The complex is designed for radiation monitoring under the Comprehensive Test Ban Treaty.

Investigation of the Processes e e e + e e e -→ 2 → 2 → 2 (π + ππ 0 ) and e e e + e e e -→ 3 → 3 → 3 (π + π -) with the Aid of the CMD-3 Detector Abstract-The cross sections for the processes e + e − → 2(π + π − π 0 ) and e + e − → 3(π + π − ) at c.m. energies in the range of 1.5-2 GeV were measured with the aid of the CMD-3 detector at the VEPP-2000 collider of the Budker Institute of Nuclear Physics (Novosibirsk, Siberian Branch, Russian Academy of Sciences). The integrated luminosity in the respective experiment was 22 pb −1 .

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We report preliminary results on the measurement of the [Formula: see text] cross section with the CMD-3 detector at the VEPP-2000 electron-positron collider based on 4.5 pb-1 of integrated luminosity collected in the c.m. energy range 1.92 - 2.0 GeV. Event selection using information from the Drift Chamber and Calorimeters provides a clean sample of [Formula: see text] events. The obtained results are in good agreement with the previous measurements.