Browsing Space, Telecommunication, Astronomy, & Radiation Lab by Subject "electron density"

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    • Radio science measurements of atmospheric refractivity with Mars Global Surveyor 

      Cahoy, Kerri; Hinson, David; Tyler, G. Leonard (American Geophysical Union, 2006-05-20)
      Radio occultation experiments with Mars Global Surveyor measure the refractive index of the Martian atmosphere from the surface to ~250 km in geopotential height. Refractivity is proportional to neutral density at low ...

    • Trapped photoelectrons during spacecraft charging in sunlight 

      Cahoy, K.; Lai, S. T. (Institute of Electrical and Electronics Engineers, 2015-09)
      For a dielectric spacecraft charging in sunlight, the potentials are different on the sunlit and dark sides. Differential charging of spacecraft surfaces can trap low-energy electrons by means of potential wells and barriers. ...