title: Concepts for collection of aerosols in Titan's atmosphere.
abstract: In this paper we consider design of instruments for collection of aerosols during entry in Titan's atmosphere.  Major constraints on designs are small sample collection time, low aerosol column density, and the need to collect 1-10 micrograms of aerosol for gas chromatographic analysis.  Thus it is important to maximize aerosol collection through collector design, which includes consideration of various types of collectors and maximizing the collection efficiency of a given type of collector.  Sampling systems discussed include inertial impactors, filters, electrostatic devices, and multistage instruments.  Aerosol sampling is reviewed in the context of high-altitude (200-70 km) and low-altitude (60-30 km) regions of Titan's atmosphere.
authors.affiliation: NASA Ames Research Center, Moffett Field, California, USA.
authors.forename: V R
authors.initials: VR
authors.lastname: Oberbeck
authors.forename: D
authors.initials: D
authors.lastname: O'Hara
authors.forename: G C
authors.initials: GC
authors.lastname: Carle
mesh_terms: D000336:Aerosols / Q000032:analysis*; D001272:Atmosphere / Q000032:analysis*; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D005118:Extraterrestrial Environment; D005374:Filtration; D005740:Gases / Q000032:analysis; D008962:Models, Theoretical; D010316:Particle Size; D018539:Saturn; D013026:Space Flight / Q000295:instrumentation*; D018531:Spacecraft / Q000295:instrumentation*; D055672:Static Electricity
chemical_list: D000336:Aerosols; D005740:Gases