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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Webster, C. R. Sander, S. P. Beer, R. Knollenberg, R. G. May, R. D. Ballard, J. Hunten, D. M. |
| Abstract | A new instrument, the Probe Infrared Laser Spectrometer (PIRLS), is described for in situ sensing of the gas composition and particle size distribution of Titan’s atmosphere on the NASA/ESA Saturn Orbiter/Titan Probe Cassini Mission. For gas composition measurements, several narrow bandwidth (0.0001 $cm^{−1})$ tunable lead-salt diode lasers operating near 80 K at selected, mid-IR wavelengths (3–16 μm) are directed over a pathlength defined by a small reflector extending over the edge of the probe spacecraft platform; volume mixing ratios of $10^{−9}$ should be measurable for several species of interest. A cloud particle size spectrometer using a diode laser source at 0.78 μm shares the optical path and deployed reflector; a combination of imaging and light scattering techniques will be used to determine sizes of haze and cloud particles and their number density as a function of altitude. |
| ISSN | 1559128X |
| Volume Number | 29 |
| Journal | Applied Optics |
| Issue Number | 7 |
| e-ISSN | 21553165 |
| Language | English |
| Publisher | Optical Society of America |
| Publisher Date | 1990-01-01 |
| Publisher Place | United States |
| Access Restriction | Subscribed |
| Subject Keyword | Optics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering |
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