Electrostatic Lens System

Interest in electrostatic lenses for the control of ion and electron beams has been growing considerably in the past few decades. Recent innovations in the production of low energy positrons have opened a new field of research recently, for which electrostatic lenses are required. This volume addresses the need for data on simple lenses consisting of two or three apertures or cylinders, together with more complex cylinder lenses which have interesting properties. It forms an introductory text on electrostatic optics and is accompanied by a disk containing a program for the IBM personal computer. This program calculates the focal and aberration properties of a range of lenses and will also allow the study of the imaging behaviour between conjugate planes. Only non-relativistic energies are considered and the electrode geometries are easily manufactured.