| Parameter | Description |
| Aspect Ratio | Height: Width of feature - Physical Geometry |
| Sherwood Number | Mass transfer from bulk to trench |
| Diffusion Number | Ratio of Diffusion time period to time pulse time period |
| Duty Factor | Ratio of deposition time to pulse time |
| Dimensionless concentration | Normalized Species concentration in reactor space |
| Polarization | Measure of mass transfer resistance to kinetic resistance |