Frequency and time domain permittivity measurements on solid CO2 and solid CO2-soil mixtures as Martian soil simulants (Articolo in rivista)

Type
Label
  • Frequency and time domain permittivity measurements on solid CO2 and solid CO2-soil mixtures as Martian soil simulants (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • E. Pettinelli, G. Vannaroni, A. Cereti, F. Paolucci, G. Della Monica, M. Storini, F. Bella (2003)
    Frequency and time domain permittivity measurements on solid CO2 and solid CO2-soil mixtures as Martian soil simulants
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • E. Pettinelli, G. Vannaroni, A. Cereti, F. Paolucci, G. Della Monica, M. Storini, F. Bella (literal)
Pagina inizio
  • 10-1 (literal)
Pagina fine
  • 10-11 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 108 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • J. Geophys. Res., 108(E4), 8029, doi:10.1029/2002JE001869, 2003 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • Il lavoro analizza i risultati di misure delle proprieta' elettromagnetiche di miscele di materiali simulanti il suolo di Marte, condotte sia nel dominio del tempo che della frequenza. La conoscenza della permettivita' complessa del suolo e' di primaria importanza per l'inversione dei dati degli esperimenti radar per lo studio del sottosuolo di Marte. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Fisica \"E. Amaldi\", Universita' di Roma Tre; Istituto di Fisica dello Spazio Interplanetario - CNR, Roma. (literal)
Titolo
  • Frequency and time domain permittivity measurements on solid CO2 and solid CO2-soil mixtures as Martian soil simulants (literal)
Abstract
  • Permittivity and conductivity measurements were performed to assess the dielectric behaviour of solid CO2(i.e., CO2 ice, snow, and powder) and solid CO2/soil mixtures. For comparison, some dielectric measurements were also conducted on H2O ice, dry glass beads, glass beads satuated with water, drained glass beads, and frozen drained glass beads. The measurements were performed in the frequency domain (20 Hz to 1 MHz) using a capacitive cell (Parallel Plate Capacitor) and in the time domain using a trasmission line (Time Domain Reflectometry) The data obtained with both techniques have shown that solid CO2 has a permittivity value that ranges between 1.4 and 2.1 as a function of density, values that distinguish it from H2O ice. In contrast, H2O ice, dry glass beads, frozen (drained) glass beakds, and dry volcanic sand all have very similar permittivity values, and thus cannot be clearly distinguished at higher frequencies. Data have also shown that a high volume fraction of solid CO2 significantly reduces the permittivity value of a soil. Furthermore, almost all the samples tested in this work seem to behave like low loss materials, having a conductivity which is generally equal to or lower than 10-6Sm-1 at the highest frequency (and smaller values at lower frequencies). Finally, TDR measurements and data from some dielectric models were compared in order to assess the capability of these models to predict the permittivity of a granular multiphase material. (literal)
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