Deducing Imaginary Part of Refractive Index of Aerosol With an Optical Particle Counter
光电粒子计数器测量气溶胶折射指数虚部

This paper analyses the sensitivity of an optical particle counter ( OPC) measurement to the refractive index of partic les, and discusses the dependance of aerosol size distributions measured by an OPC on ni, the imaginary part of the refractive index. By use of the high sensitivity of OPC measurements to ni, values of ni can be deduced from simultaneous measurements by an OPC and a solar radiometer. Compared with those obtained by the integrating plate method, the results of the experiment are satisfactory.