All Stories

  1. Helium Ions in an Aberration-corrected objective lens
  2. Aberration Correction (including parasites)
  3. On Achromatic Probe-Forming Lenses for FIB Columns and Helium Microscopes
  4. Second and Third Order Aperture Aberrations of the Compensated Quadrupole Doublet
  5. Experimental compensation of parasitic octopole aberrations in small-bore quadrupole lenses
  6. An achromatic quadrupole lens doublet for positive ions