Published online by Cambridge University Press: 24 October 2008
Second order focusing can be obtained with an apparatus, which contains a circular magnetic field and differs little in its dimensions from the apparatus at present in use. The lay-out is shown to scale in Fig. 4: the essential data are collected at the end of Section V, and indications of the accuracy to be expected are given at the end of Section III.
* “Some problems of the mass spectrograph”, Phil. Mag. 43 (1922), 514.Google Scholar
* Aston and Fowler, loc. cit.