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Injections of MeV particles via intense substorm electric fields

Injections of MeV particles via intense substorm electric fields. Lei Dai, John Wygant and EFW team. EFW/BARREL Science team meeting, June, 2014 Minnesota. RBSP unusual MeV particle injection. Moderate Storm, main phase, DST:-10 ~-30. RBSP unusual MeV particle injection.

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Injections of MeV particles via intense substorm electric fields

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  1. Injections of MeV particles via intense substorm electric fields Lei Dai, John Wygant and EFW team. EFW/BARREL Science team meeting, June, 2014 Minnesota

  2. RBSP unusual MeV particle injection Moderate Storm, main phase, DST:-10 ~-30

  3. RBSP unusual MeV particle injection Moderate Storm, recovery phase, DST:-30 ~-20

  4. Orbit of RBSP-A and THEMIS D

  5. April-26, 2013 event electron injection signals, as large as 2MeV electrons at RBSP-A and >700keV at THEMIS D. RBSP-A THEMIS D

  6. April-26, 2013 event Ion injection signals, as large as MeV ions at RBSP-A and >700keV at THEMIS D.

  7. The role of electric fields in injections 1. Acceleration mechanism that conserves the first adiabatic invariant. • Guiding center drift in large scale electric fields. • Betatron acceleration associated with inductive electric fields (Db/Dt) that could be very localized. 2. Other non-adiabatic acceleration mechanisms.

  8. END

  9. Backup slides

  10. Unusual MeV particle injection Unusual MeV relativistic injection during intense (as large as 10s mV/m) substorm electric fields The injected MeV particles dominate the substorm-time scale increases in relativistic electrons at geosynchronous orbit. The physics of MeV particle injection.

  11. PSD comparison Energization through conservation of the first adiabatic invariant

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