The following diffusion values were calculated by Blair Stringfellow using Magboltz 1 (Biagi, 1995). The assumed temperature and pressure were similar, if not identical, to the STAR operating conditions (~2 mbar above the ambient atmospheric pressure with E ~ 148 V/cm and T ~ 75F=23.9C) .
| ||E (V/cm)|
Calculated transverse diffusion [um/sqrt(cm)] in P10 for
parallel E and B.
Calculated longitudinal diffusion [um/sqrt(cm)] in P10 for parallel
E and B. Values are nearly independent of the magnitude of B.