Pulsations in auroral electrons and positive ions

Details Pulsations in auroral electrons and positive ions Pulsations in auroral electrons and positive ions

Feb 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jatp...42..167s&link_type=abstract

Journal of Atmospheric and Terrestrial Physics, vol. 42, Feb. 1980, p. 167-178.

Computer Science

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7

Auroras, Electron Flux Density, Ion Distribution, Positive Ions, Rocket Sounding, Energy Distribution, Maxwell-Boltzmann Density Function, Pitch (Inclination), Radiation Counters, Temperature Dependence

Scientific paper

Pulsations in the intensities of electrons and positive ions observed on a rocket flight into a pulsating aurora are examined and discussed. The correspondence between electron and ion pulsations is investigated, and the velocity dispersion in electrons and ions is evaluated. A method is devised for identifying positive ions using a velocity spectrogram, though the results in this instance are inconclusive. Pitch-angle distributions of the electrons are found to be isotropic at both pulsation maxima and minima. Electron energy distributions are found to be approximately Maxwellian with temperatures, expressed in energy units E sub o (= kT), in the range 4-12keV. Pulsations correspond to temperature changes of approximately a factor of 2. Possible causes of the pulsations are discussed.

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