Laboratory measurements of microwave and millimeter-wave properties of planetary atmospheric constituents
Accurate data on microwave and millimeter-wave properties of potential planetary atmospheric constituents is critical for the proper interpretation of radio occultation measurements, and of radio astronomical observations of both continuum and spectral line emissions. Such data is also needed to correct for atmospheric effects on radar studies of surface reflectivity. Since the refractive and absorptive properties of atmospheric constituents often vary drastically from theoretically-predicted profiles, especially under the extreme conditions characteristic of the planetary atmosphere, laboratory measurements under simulated planetary conditions are required. This paper reviews the instrumentation and techniques used for laboratory measurement of the refractivity and absorptivity of atmospheric constituents at wavelengths longward of 1 mm, under simulated planetary conditions (temperature, pressure, and broadening gases). Techniques for measuring both gases and condensates are considered. Also reviewed are the relative accuracies of the various techniques. Laboratory measurements are reviewed which have already been made, and additional measurements which are needed for interpretation of data from Venus and the outer planets, are highlighted.
- Research Organization:
- Georgia Inst. of Tech., Atlanta, GA (USA)
- OSTI ID:
- 5027279
- Report Number(s):
- N-90-10815; NASA-CR-185914; NAS-1.26:185914; CONF-8910341-; TRN: 90-026623
- Resource Relation:
- Conference: 1. international conference on laboratory research flor planetary atmospheres, Bowie, MD (USA), 25 Oct 1989
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laboratory evaluation and application of microwave absorption properties under simulated conditions for planetary atmospheres. Semiannual Status Report, 1 February-31 July 1986
Laboratory evaluation and application of microwave absorption properties under simulated conditions for planetary atmospheres. Semiannual status report, 1 February-31 July 1988
Related Subjects
GENERAL PHYSICS
PLANETARY ATMOSPHERES
ABSORPTIVITY
CHEMICAL COMPOSITION
REFRACTIVITY
CAVITY RESONATORS
CONDENSATES
COSMIC GASES
EXPERIMENTAL DATA
FABRY-PEROT INTERFEROMETER
MICROWAVE SPECTRA
RADIOWAVE RADIATION
SIMULATION
ATMOSPHERES
DATA
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
EQUIPMENT
FLUIDS
GASES
INFORMATION
INTERFEROMETERS
MEASURING INSTRUMENTS
NUMERICAL DATA
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
RESONATORS
SPECTRA
640107* - Astrophysics & Cosmology- Planetary Phenomena