Abstract
A voltage control unit for a spherical sector analyzer used in the energy analysis of scattered ions is described. Three modes of operation, namely, automatic, manual, and computer control is possible. The unit is directly calibrated in terms of the scattered energies which is displayed on a liquid crystal unit. The scanning time in the auto mode is adjustable from 1 to 999 s in 1-s steps for any selected energy range. A 0–10-V recorder output is available regardless of the energy window selected. The basic operation and the functioning of the various components are explained with the help of block diagrams and a final evaluation of the system is given. Complete circuit diagrams are available from the Physics Auxiliary Publication Service (PAPS) of the American Institute of Physics.
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