Trapped ACR Intensities

Posted June 28, 2007

From: Richard Selesnick, The Aerospace Corp., June 2007

Three text files with Anomalous Cosmic Ray (ACR) data used in the associated figures (see Reference #2):

1. Normalized O intensity as a function of time. Associated figure

2. Normalized O intensity as a function of pitch angle. Associated figure

3. Normalized O intensity as a function of invariant latitute. Associated figure

file tACR1.txt columns: 
1. Center of SAMPEX time bin [seconds since start of 1992] 
2. Normalized oxygen intensity 
3. 1-sigma error 
4. Counts per bin 

file tACR2.txt columns: 
1. Center of pitch angle bin [deg] 
2. Normalized oxygen intensity 
3. 1-sigma error 
4. Counts per bin 

file tACR3.txt columns: 
1st line and every 9th line 
   1. Center of invariant latitude bin (deg) for the energy spectrum in the following 8 lines 
   2. Corresponding L shell value [L = 1/cos^2(InvLat)] 
following 8 lines 
   1. Geometric mean energy of bin [MeV/nucleon] 
   2. Oxygen intensity [ions/(cm^2.s.sr.MeV/nucleon)] 
   3. 1-sigma error 

The oxygen intensity for any given time, pitch angle, invariant latitude, 
and energy is the product of the 3 intensity values from the corresponding bins 
in each of the 3 files. 

References:

1. Selesnick, R. S., A. C. Cummings, J. R. Cummings, R. A. Mewaldt, E. C. Stone, T. T. von Rosenvinge, Geomagnetically trapped anomalous cosmic rays, J. Geophys. Res., 100(A6), 9503-9518, 10.1029/94JA03140, 1995.

2. Selesnick, R. S., A. C. Cummings, R. A. Leske, R. A. Mewaldt, E. C. Stone, J. R. Cummings, Solar cycle dependence of the geomagnetically trapped anomalous cosmic rays, Geophys. Res. Lett., 27(15), 2349-2352, 10.1029/2000GL000049, 2000.

3. Selesnick, R. S.., Geophys. Res. Lett., 28(17), 3417-3420, 10.1029/2001GL013383, 2001