Aperture strip for FEI Pre-lens FIB column
Automatic Variable Aperture (AVA) strip for FEI Pre-lens FIB column, standard configuration for 10 different beam currents. The aperture sizes provide beam currents of:
AVA strip aperture sizes increase with use due to ion sputtering. We recommend a new strip be installed when beam currents are an average of 10% greater than these values.