Response characteristics of the Knollenberg active scattering
aerosol spectrometer ASAS-300X are investigated on monodisperse lightabsorbing
aerosols generated by a Berglund-Liu vibrating orifice monodisperse
aerosol generator. The responses on the light-absorbing aerosols
are in fairly good agreement with Mie scattering theoretical predictions.
The response of the Knollenberg ASAS-300X to light-absorbing spherical
aerosols is of almost monotonically increasing single-valued behavior
compared to the multivalued behavior of nonabsorbing spherical aerosols,
and the instrument's response to light-absorbing aerosols is closer to the
manufacturer's calibration than is its response to nonabsorbing aerosols.