@InProceedings{Muralikrishna:2012:MeDuEf,
               author = "Muralikrishna, P.",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Meteoric dust effect on the E-region plasma instability 
                         mechanisms",
            booktitle = "Abstracts...",
                 year = "2012",
                pages = "14--15",
         organization = "International Symposium on Equatorial Aeronomy, 13. (ISEA).",
             abstract = "It is known that the meteoric dust particles play an important 
                         role in the electrodynamics of the E-region plasma. Large amounts 
                         of dust particles with average sizes of about 0.1m with number 
                         densities of up to several thousands per cubic centimeter and 
                         charge densities of the same order have been experimentally 
                         detected in the lower E-region altitudes. In some parts of the 
                         dust layers it was found that the negative charge density on dusts 
                         was so large that the number of free electrons was significantly 
                         reduced there, since the dust acted as a sink for electrons, thus 
                         causing electron bite outs. Recent studies show the possible role 
                         of neutral as well as charged dust particles of submicron size in 
                         altering the conductivity parameters in the equatorial E-region 
                         through the collision frequencies. In the upper E-region the dust 
                         particles are not very effective in capturing the ambient 
                         electrons and so do not affect the quase neutrality of the plasma. 
                         But they can alter the effective collision frequencies of the 
                         ambient electrons in this region by a factor as high as 4. They 
                         can also reduce significantly the growth rate and amplitude of 
                         plasma irregularities in this region. In the lower E-region the 
                         dust particles can affect significantly the electrical 
                         conductivities. When exist in sufficient numbers, charged dust 
                         particles can even reverse the ambient vertical polarization 
                         electric field in the lower E-region altitudes. This can affect 
                         the plasma instability mechanisms like Cross-Field Instability and 
                         Two-Stream Instability that operate in the E-region. Assuming a 
                         simple exponential model for the dust layer, the role of these 
                         dust particles in altering the E-region electrodynamics by 
                         affecting the collision and conductivity parameters is 
                         investigated here.",
  conference-location = "Paracas, Peru",
      conference-year = "12 a 17/03/2012",
                label = "self-archiving-INPE-MCTIC-GOV-BR",
           targetfile = "muralikrishna_meteoric.pdf",
        urlaccessdate = "10 maio 2024"
}