Koreichi Ogata

On a Two-Stage Double-Focusing Mass Spectroscope under Construction at Osaka University

Planning to construct a huge tandem type mass spectroscope at Osaka University was begun in 1967 (1), in order to determine atomic masses to an accuracy of nearly one order of magnitude higher than we had obtained so far. The new mass spectroscope consists of two sets of double focusing analyzers, each of which has a energy selector with cylindrical electric field and a momentum selector with uniform magnetic field. These sets are aligned in tandem with turned over S-shape.

Mass Differences of Doublets Involving H, D, C, N and O

The reconstructing work on our large machine, damaged by a high tide-flood in 1961, has not yet been finished completely. However, the degree of damage to our Bainbridge-Jordan type mass spectrograph was not so serious and we were able again to start our mass measuring work last fall. Here I would like to present some data obtained with it.