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Titolo:
Evidence for acceleration of ions to similar to 1 MeV by adiabatic-like reflection at the quasi-perpendicular Earth's bow shock
Autore:
Meziane, K; Lin, RP; Parks, GK; Larson, DE; Bale, SD; Mason, GM; Dwyer, JR; Lepping, RP;
Indirizzi:
Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA Univ Calif Berkeley Berkeley CA USA 94720 Sci Lab, Berkeley, CA 94720 USA Univ Washington, Geophys Program, Seattle, WA 98195 USA Univ Washington Seattle WA USA 98195 ophys Program, Seattle, WA 98195 USA Univ Maryland, Dept Phys, College Pk, MD 20742 USA Univ Maryland College Pk MD USA 20742 Dept Phys, College Pk, MD 20742 USA NASA, Goddard Space Flight Ctr, Extraterr Phys Lab, Greenbelt, MD 20771 USA NASA Greenbelt MD USA 20771 , Extraterr Phys Lab, Greenbelt, MD 20771 USA
Titolo Testata:
GEOPHYSICAL RESEARCH LETTERS
fascicolo: 19, volume: 26, anno: 1999,
pagine: 2925 - 2928
SICI:
0094-8276(19991001)26:19<2925:EFAOIT>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
WIND SPACECRAFT; ENERGETIC IONS; HEAVY-IONS; UPSTREAM; PLASMA; ELECTRONS; EVENTS; ENERGIZATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
24
Recensione:
Indirizzi per estratti:
Indirizzo: Meziane, K Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA UnivCalif Berkeley Berkeley CA USA 94720 rkeley, CA 94720 USA
Citazione:
K. Meziane et al., "Evidence for acceleration of ions to similar to 1 MeV by adiabatic-like reflection at the quasi-perpendicular Earth's bow shock", GEOPHYS R L, 26(19), 1999, pp. 2925-2928

Abstract

On December 6, 1994, during a CIR (Corotating Interaction Region) event, the WIND 3D-Plasma and energetic particle experiment observed a burst (less than or equal to 24 s) of 238-676 keV protons close to the electron foreshock boundary, followed by a 156-236 keV, 101-156 keV and 33-101 keV proton bursts about similar to 40 s, 65 s and 85 s later, respectively. Similar dispersed bursts of helium with energies between similar to 50 keV and similarto 1 MeV followed the proton bursts. During this time, the IMF direction varied slowly with an almost monotonic decrease in theta(Bn). The proton energy spectrum is initially peaked at similar to 350 keV, and progresses to lower energies with time. The proton 3D angular distributions are peaked at similar to 30 degrees pitch-angle, propagating away from the shock, but they are non-gyrotropic. Finally, we show that the proton energy-spectra as well as the pitch angle distribution agree quantitatively with a model of a single adiabatic reflection of the incident energetic interplanetary ions bythe quasi-perpendicular shock.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 04:25:37