Microwave properties of solid CO2
Measurements over the range of 2.2 to 12.0 GHz show that CO2 snow is a slightly lossy dielectric whose constant varies with density following the Rayleigh formula to 1.27 g/cu cm. It is independent of frequency and does not vary with temperature in the 113 to 183 K range; frequency independence and...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19810025791 2023-05-15T17:39:50+02:00 Microwave properties of solid CO2 Simpson, R. A. Howard, H. T. Fair, B. C. Unclassified, Unlimited, Publicly available Oct 10, 1980 http://ntrs.nasa.gov/search.jsp?R=19810025791 unknown http://ntrs.nasa.gov/search.jsp?R=19810025791 Accession ID: 81A10195 Copyright Other Sources 91 Journal of Geophysical Research; 85; Oct. 10 1980 ftnasantrs 2012-02-15T14:35:34Z Measurements over the range of 2.2 to 12.0 GHz show that CO2 snow is a slightly lossy dielectric whose constant varies with density following the Rayleigh formula to 1.27 g/cu cm. It is independent of frequency and does not vary with temperature in the 113 to 183 K range; frequency independence and agreement with the Rayleigh fit are obtained from measurements on dry block ice. The dielectric constant of solid CO2 in block form is lower than that of solid water ice or solid rock; in powder form, the constant for CO2 is also lower than that of H2O (snow) or soils. These measurements may be useful in limiting the interpretations of the Viking radio reflection experiment; a radio value of 3.0 for the dielectric constant near the North Pole would be strong evidence against the presence of cm thicknesses of CO2 in that region. Other/Unknown Material North Pole NASA Technical Reports Server (NTRS) North Pole |
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NASA Technical Reports Server (NTRS) |
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91 Simpson, R. A. Howard, H. T. Fair, B. C. Microwave properties of solid CO2 |
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91 |
description |
Measurements over the range of 2.2 to 12.0 GHz show that CO2 snow is a slightly lossy dielectric whose constant varies with density following the Rayleigh formula to 1.27 g/cu cm. It is independent of frequency and does not vary with temperature in the 113 to 183 K range; frequency independence and agreement with the Rayleigh fit are obtained from measurements on dry block ice. The dielectric constant of solid CO2 in block form is lower than that of solid water ice or solid rock; in powder form, the constant for CO2 is also lower than that of H2O (snow) or soils. These measurements may be useful in limiting the interpretations of the Viking radio reflection experiment; a radio value of 3.0 for the dielectric constant near the North Pole would be strong evidence against the presence of cm thicknesses of CO2 in that region. |
format |
Other/Unknown Material |
author |
Simpson, R. A. Howard, H. T. Fair, B. C. |
author_facet |
Simpson, R. A. Howard, H. T. Fair, B. C. |
author_sort |
Simpson, R. A. |
title |
Microwave properties of solid CO2 |
title_short |
Microwave properties of solid CO2 |
title_full |
Microwave properties of solid CO2 |
title_fullStr |
Microwave properties of solid CO2 |
title_full_unstemmed |
Microwave properties of solid CO2 |
title_sort |
microwave properties of solid co2 |
publishDate |
1980 |
url |
http://ntrs.nasa.gov/search.jsp?R=19810025791 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
genre_facet |
North Pole |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19810025791 Accession ID: 81A10195 |
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Copyright |
_version_ |
1766140599480614912 |