Abstract
A precise mass calibration method for mass spectrograph is studied theoretically and experimental investigations on the method are carried out with the BainbridgeJordan type apparatus and with the Ogata-Matsuda type apparatus.As a result, dispersion constants estimated with simultaneously exposed four dispersion lines among which there is no restriction, are in good agreement with those obtained by two symmetric pairs for the former apparatus.Also, it is indicated practically for the latter apparatus that those constants estimated with three dispersion lines are in complete accordance with those calculated from four dispersion lines by procedures for the corrections to a1.
