Discrete Ion Signature on Energy-Time Spectrogram Maxwellian - - PowerPoint PPT Presentation
-- -- Importance of Heavy Ion Species Insufficient Data from Ion
極域・ 赤道域磁気圏における重イ オン観測
ピッ チ角・ 速度分布 --
平原 聖文 （ 立教大学理学部物理学科）
Importance of Heavy Ion Species Insufficient Data from Ion Energy-Mass Spectrometers
Discrete Ion Signature on Energy-Time Spectrogram Maxwellian Fitting for Velocity Distribution Function
Akebono Geotail Interball-Aurora FAST
Ionospheric origin Plasma sheet acceleration Magnetic field oscillation (Pc 5)
Polar magnetosphere Lobe/mantle Magnetopause Plasma sheet Dayside magnetosphere
Akebono LEP (Ele. & Ion) Log Ion Energy (eV/q) Log Ele. Energy (eV)
Energy-Dispersing Cause due to Convection
Akebono LEP (Ele. & Ion) December 9, 1989 Energy Ratios of Multiple Energy Dispersions
Log Energy (eV/q)
Log Energy (eV/q) Log Energy (eV/q)
Akebono LEP (Ele. & Ion) & IMS November 8, 1989
Sauvaud et al., 1999
Sauvaud et al., 1999
UT 13:40 13:48 Akebono LEP (Ele. & Ion) & IMS January 30, 1990
Akebono & FAST January 19, 1997
H+ O+ Ele.
H+ O+ Ele.
Geotail LEP (Ele. & Ion) December 9, 1994
What should be done in future missions?
・ Full Coverages of …
Energy (from 0.1 up to 10,000,000 eV) Mass (H+, He2+, He +, O +, molecular ions) Pitch angle (0-180 deg) Acceptance Solid angle (~4π sr)
・ Sufficient Resolutions of …
Energy (5-20 %) Angle (1-5 deg) Time (Ele.: 10 msec, Ion: 3 sec)