| 摘要 |
The invention relates to a method and an apparatus (1) for determining an aerosol particle size distribution. The method includes the steps of modulating an aerosol particle beam (6) with an aerosol particle gate (2) which is controlled by a modulation function for generating a modulated aerosol particle beam, of guiding the modulated aerosol particle beam through a drifting region (3), of measuring a signal of the modulated aerosol particle beam after the modulated aerosol particle beam has passed the drifting region (3) and of calculating a correlation of the modulation function and the signal in order to determine the size distribution of the aerosol particles. The apparatus (1) includes an aerosol particle gate (2) which is controlled by a modulation function for generating from an aerosol particle beam (6) a modulated aerosol particle beam, a drifting region (3) through which the modulated aerosol particle beam is guidable, a detector (4) by which the signal of the modulated aerosol particle beam is measurable after the modulated aerosol particle beam has passed the drifting region (3) and a calculation unit (5) by which the correlation of the modulation function and the signal is calculable in order to determine the size distribution of the aerosol particles. |
