METHOD FOR REDUCING EQUIVALENT VOLUMETRIC EQUILIBRIUM ACTIVITY OF RADON ISOTOPES INDOORS Russian patent published in 1998 - IPC

FIELD: decontamination of gaseous radioactive wastes. SUBSTANCE: electrostatic field is built up in room by means of generator with cold emission of electrons whose kinetic energy is at least 34 eV; specific concentration of light negative oxygen aeroions should be at least 10 000 el. charge/cu. cm. Electrostatic field strength is set in room primarily at 5-15 kV/m at 0.5 m from generator ionizing electrode and specific concentration of light negative oxygen aeroions of 10 000-50 000 el.charge/cu.cm. EFFECT: reduced equivalent equilibrium activity of radon isotope in room. 2 cl