Chamber LIDAR measurements of aerosolized biological simulants
2009
A chamber aerosol LIDAR is being developed to perform well-controlled tests of optical scattering characteristics of
biological aerosols, including Bacillus atrophaeus (BG) and Bacillus thuringiensis (BT), for validation of optical
scattering models. The 1.064 μm, sub-nanosecond pulse LIDAR allows sub-meter measurement resolution of particle
depolarization ratio or backscattering cross-section at a 1 kHz repetition rate. Automated data acquisition provides the
capability for real-time analysis or recording. Tests administered within the refereed 1 cubic meter chamber can provide
high quality near-field backscatter measurements devoid of interference from entrance and exit window reflections.
Initial chamber measurements of BG depolarization ratio are presented.
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