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An ion drift meter is a device used to measure the velocity of individual ions in the area of a spacecraft.This information can then be used to calculate the ion drift in the space surrounding the instrument as well as the strength of an electric field present, provided that the magnetic field strength has been determined using a magnetometer.
The IVM instrument includes an ion drift meter and a retarding potential analyzer. IVM measure the ion drift vector, the ion temperature, and the major ion composition with a spatial resolution of about 4 km (2.5 mi) along the satellite track; the ion drift meter also provides vertical and horizontal ion drift components at 500 m (1,600 ft ...
The formula for evaluating the drift velocity of charge carriers in a material of constant cross-sectional area is given by: [1] =, where u is the drift velocity of electrons, j is the current density flowing through the material, n is the charge-carrier number density, and q is the charge on the charge-carrier.
The physical quantity ion mobility K is defined as the proportionality factor between an ion's drift velocity v d in a gas and an electric field of strength E. = After making the necessary adjustments to account for the n0 standard gas density, ion mobilities are often expressed as reduced mobilities.
ICON was equipped with four instruments: a Michelson interferometer, built by the United States Naval Research Laboratory (NRL) to measure the winds and temperatures in the thermosphere; an ion drift meter, built by University of Texas at Dallas to measure the motion of charged particles in the ionosphere; and two ultraviolet imagers built at ...
Mounted on the boom, the satellite has an Magnetometer Instrument Assembly System (MIAS) for measurement of the Earth's magnetic field. The vehicle can measure the Earth's electric field parallel to the magnetic field with the Digital Ion Drift Meter (DIDM). [4]
Debris from a SpaceX Falcon 9 rocket that blasted off in the United States on February 1 entered the Earth's atmosphere over Poland on Wednesday, the Polish space agency said. A 1.5 meter by one ...
SSIES, or the Special Sensors-Ions, Electrons, and Scintillation thermal plasma analysis package is a suite of instruments built by the William B. Hanson center for Space Sciences at the University of Texas at Dallas and flown on a number of the DMSP satellites.