Energy spectra of plasma sheet ions and electrons from about 50 eV/e to about 1 MeV during plamsa temperature transitions

Details Energy spectra of plasma sheet ions and electrons from about 50 eV/e to about 1 MeV during plamsa temperature transitions Energy spectra of plasma sheet ions and electrons from about 50 eV/e to about 1 MeV during plamsa temperature transitions

Apr 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.2562c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, April 1, 1988, p. 2562-2572.

Physics

159

Energy Spectra, Plasma Composition, Plasma Temperature, Space Plasmas, Electron Energy, Electron Plasma, Energy Distribution, International Sun Earth Explorer 1, Plasma Layers, Positive Ions

Scientific paper

ISEE-1 charged-particle measurements obtained during eight plasma temperature transitions (PTTs) in 1978-1979 are compiled in tables and graphs and analyzed in detail, comparing the ion and electron differential energy spectra with the predictions of theoretical models. PTTs are defined as approximately 1-h periods of low bulk plasma velocity and steadily increasing or decreasing thermal energy. A Maxwellian distribution is found to be inadequate in describing the PTT energy spectra, but velocity-exponential and kappa distributions are both successful, the latter especially at higher energies. The power-law index kappa varies from PTT to PTT, but the high-energy spectral index and overall shape of the distribution remain constant during a PTT; both spatial and temporal effects are observed.

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