Several tables are output from a particle simulation:
Counter function. This is the total number of particles that survive to the number impacts with the boundary that is specified in the Minimum Number of Impacts parameter.
Normalized counter function. This is the counter function described above divided by the total number of particles that were sourced.
SEY curve. This is the true secondary yield curve, which is the average yield as a function of impact energy under the condition of normal incidence.
Estimated gain rate. This table shows the gain in particle count per RF period. It has a minimum value of zero, and it is calculated based upon particle counts in the later times (after the first few RF periods) to eliminate the effect of the dissipation of the initial surge of particles from volumetric or surface sourcing.