Bestimmung von Löschquerschnitten durch Lebensdauermessungen am Natrium-32 P-Zustand

The natural lifetime of the sodium resonance state has been measured using the phase-shift method. By addition of molecular gases the lifetime is shortened because of the nonradiative decay induced in collisions with molecules. The cross sections for such quenching collisions are obtained for various gases from an analysis of the dependence of the effective lifetime on the gas pressures.