ACR Intensities in Interplanetary Space

Posted August 13, 2007

From: Berndt Klecker, MPE

These Anomalous Cosmic Ray (ACR) intensities and plots are from the HILT instrument on SAMPEX. HILT was launched with a ~1000 day supply of isobutane for the proportional counter. Thus, these data cover from 11 August 1992 through 17 June 1995.

1. 10-Day Averages
   ACR oxygen, nitrogen and neon intensities in several energy ranges between 8 and 28 MeV/nuc, averaged over 10 days with the provision that (1) the spacecraft is at magnetic latitudes of 70 degrees or higher, and (2) of interplanetary quiet times. For the determination of quiet times an upper limit of the He flux in the energy range 4 - 6 MeV/nuc of 10**-4 p/cm2 s sr MeV/nuc has been used.
   Data in ASCII text format.
   Time-series plot
   Note: Date stamps in plots are in DD/MM/YYYY format.

2. 26-Day Averages
   ACR oxygen intensities in the energy ranges 8 - 16 and 16 - 20 MeV/nuc, averaged over 26 days with the provision that (1) the spacecraft is at magnetic latitudes of 70 degrees or higher, and (2) of interplanetary quiet times. For the determination of quiet times an upper limit of the He flux in the energy range 4 6 MeV/nuc of 10-4 p/cm2 s sr MeV/nuc has been used.
   Data in ASCII text format.
   Time-series plot
   Note: Date stamps in plots are in DD/MM/YYYY format.