| Parameter Name | Units | Type | Default | Description |
| PLANE | STRING | NULL | Plane to scatter: xp, yp, dp (dp is deltaP/P) | |
| FILENAME | STRING | NULL | Name of SDDS file containing distribution function. | |
| VALUENAME | STRING | NULL | Name of column containing the independent variable for the distribution function data. | |
| CDFNAME | STRING | NULL | Name of column containing the cumulative distribution function data. | |
| PDFNAME | STRING | NULL | Name of column containing the probability distribution function data. | |
| ONCEPERPARTICLE | long | 0 |
If nonzero, each particle can only get scattered once by this element. | |
| FACTOR | double | 1 | Factor by which to multiply the independent variable values. | |
| PROBABILITY | double | 1 | Probability that any particle will be selected for scattering. | |
| GROUPID | long | -1 | Group ID number (nonnegative integer) for linking once-per-particle behavior of multiple elements. | |
| RANDOMSIGN | long | 0 |
If non-zero, then the scatter is given a random sign. Useful if distribution data is one-sided. | |
| LIMITPERPASS | long | -1 | Maximum number of particles that will be scattered on each pass. | |
| LIMITTOTAL | long | -1 | Maximum number of particles that will be scatter for each step. |
A scattering element to add random changes to particle coordinates according to a user-supplied distribution function
| Parameter Name | Units | Type | Default | Description |
| STARTONPASS | long | 0 |
Pass number to start on. |