Artificial electron clouds—V
1960; Elsevier BV; Volume: 2; Issue: 2-3 Linguagem: Inglês
10.1016/0032-0633(60)90012-x
ISSN1873-5088
AutoresF. F. Marmo, J. Pressman, E. R. Manring, Leonard M. Aschenbrand,
Tópico(s)Atmospheric aerosols and clouds
ResumoAbstract This paper, one of a continuing series, reports the results and analysis of two rocket experiments designed to study the simultaneous optical and radio-radar behavior of artificial electron clouds. The optical properties were obtained by “doping” the cloud with a small percentage of sodium in one experiment and using a complete payload of sodium in another. These experiments were performed with the Nike-Cajun under morning twilight conditions on 21 and 22 May 1958 respectively. Analyses are made of radar slant range behavior with time, optical growth rate and variation of critical frequency with time. In the last, a more advanced analysis is used which allows for the differential diffusion of charged and neutral particles. The results from these analyses are compared to the estimated atmospheric properties and to thermo-chemical release properties. These are also cross-checked among themselves. This study indicates the utility of combined radio-radar and optical observations. Values are derived for the following parameters: the neutral and ambipolar diffusion coefficients, chemical yield, thermal ionization efficiency, wind velocity and wind shear.
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