Discrete Ion Signature on Energy-Time Spectrogram Maxwellian - PowerPoint PPT Presentation

Sep 24, 2023 •235 likes •437 views

-- -- 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 -- エネルギー分散とピッチ角・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
Data Source Region Akebono Geotail Polar magnetosphere Interball-Aurora Lobe/mantle FAST Magnetopause Plasma sheet Interpretation Dayside magnetosphere Ionospheric origin Plasma sheet acceleration Magnetic field oscillation (Pc 5)
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)
Akebono LEP (Ele. & Ion) & IMS November 8, 1989 Log Energy (eV/q) Log Energy (eV/q)
Sauvaud et al., 1999
Sauvaud et al., 1999
Akebono LEP (Ele. & Ion) & IMS January 30, 1990 UT 13:40 13:48
Akebono & FAST January 19, 1997 Ele. H + O +
Ele. H + O +
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 + , He 2+ , He + , O + , molecular ions) Pitch angle (0-180 deg) Acceptance Solid angle (~4 π sr) ・ Sufficient Resolutions of … Energy (5-20 %) Angle (1-5 deg) Time (Ele.: 10 msec, Ion: 3 sec)

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