Are there any restrictions to the electron beam current?
There are some considerations to the choice of beam parameters and the recommended parameters can be found in the QX-102 User Manual. Generally, higher beam currents result in stronger signals, but increase the possibility of damage to the sample and affect the resolution. Lower beam currents minimize the damage and result in better resolution at high magnifications, but may give a signal that is not satisfactory. The optimal beam current depends on the sample and is determined empirically.
