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Energetic Proton Maps for the South Atlantic Anomaly

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4 Author(s)
Ginet, G.P. ; Air Force Res. Lab., Hanscom AFB ; Madden, D. ; Dichter, B.K. ; Brautigam, D.H.

A new set of flux intensity maps for energetic protons in the South Atlantic Anomaly (SAA) region is presented for the epoch 2000-2006 based on data from the compact environment anomaly sensor (CEASE) flown onboard the tri-service experiment-5 (TSX-5) satellite in a 410 km x 1710 km, 69 degree inclination orbit. Maps for > 23 Mev, > 38 MeV, > 66 MeV and > 94 MeV protons have been constructed and boundary contours for 1/2 maximum, 1/10 maximum and 3 times the background standard deviation derived. Estimates are given of the integral energy spectra as a function of altitude from 400 km to 1650 km, an interval spanning the range where the controlling factor in the dynamics changes from the neutral density to the global magnetic field. The position of the maximum flux point is compared to that determined from earlier measurements in the 1994-1996 epoch and found to be consistent with the well-known westward drift.

Published in:

Radiation Effects Data Workshop, 2007 IEEE  (Volume:0 )

Date of Conference:

23-27 July 2007