Probe experiment for measurement of plasma parameters and ion drift velocities in the ionospheric plasma onboard the Intercosmos-Bulgaria 1300 satellite☆

Abstract In agreement with the scientific program Bulgaria-1300, a complex of probe instruments was designed for the measurements equipment: ID-1, P-6, P-7 and DIET-2 to define the local plasma parameters. The instruments measure: electron temperature Te, electron density Ne, ion temperature Ti, ion density Ni, ion energy distribution f(Ej), mass ion composition Mi, complete ion drift vector VD 0.1 to 5 km/s and ion density variations ΔN j N j within the range 0.50–100%.