Abstract
An earlier work on a Mattauch-Herzog type mass spectrograph with two-stage electrostatic field is extended to investigating the conditions of simultaneous elimination of αβ aberration for all masses. The design parameters are numerically calculated. The other coefficients of the second-order aberrations are examined and the total image defects are calculated for typical examples. An instrument according to the present study has sufficiently small and approximately constant image defects and has a high potential for use in the chemical analysis of solid.