These plots show the calculated nuclear charge Z as a function of detection time for each pulseheight-analyzed particle recorded by SIS.

SIS/CRIS Count Plots

These data consist of 4 SIS rates and 1 CRIS rate (in counts/second) versus time, with one month of data per plot. Since the data are given in counts/second, the energy intervals and geometry factors must be corrected for before obtaining meaningful abundance ratios from these data. The data are derived from SIS and CRIS level 1 rate data and are an improvement over the Browse data, in that sensor priority schemes have been corrected for. However, the data still contain a certain amount of background (especially the T4 and He SIS rates) which have not been corrected for.

The 4 SIS rates are as follows:

• T4 - the singles rate for detector T4, this rate is primarily protons of energies > 10 MeV (also used in the ACE RTSW plots).
• He - the He buffer rate for ranges 0-2, corresponding to ~4-7 MeV/nucleon.
• CNO - the CNO buffer rate for ranges 0-2, corresponding to ~7-15 MeV/nucleon.
• Ne-Fe - the Z >= 10 buffer rate for ranges 0-2, corresponding to ~9-20 MeV/nucleon.

The CRIS rate is:

• the weighted average of the Z >= 10 buffer rates for ranges 3-4, 5-7, and 8, corresponding to ~100-400 MeV/nucleon. This data is generally not available during high rate time periods.

These plots are for browse purposes only and are not suitable for serious scientific study. For that you should use Level 2 data.

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