Elektronenlawinen in elektronegativen Gasen

摘要: It is possible to determine the coefficients of ionisation (α) and attachment (η) drift velocities positive negative ions formed by these processes analysing current pulses avalanches (started c. 103 electrons) under homogeneous field conditions with wide band oscillographic techniques. Measurements were made some electronegative gases such as CO2, Freon 12, SO2, SF6, O2. In CO2 12 are dissociative only, while in SO2 additional a three body process. At higher pressures clustering becomes apparent, existence two different mobilities was confirmed. For O2 detachment process must be taken into account. The same seems apply, lesser extent, SF6.