Mass Spectrum Analysis 1. The Mass Spectrograph 2. The Existence of Isobars of Adjacent Elements in Physical Review 50, 4, August 15, 1935, pp. 282-296 [1st edition in ORIGINAL WRAPS: INVENTION OF THE DOUBLE FOCUSING SPECTROMETER]
FIRST EDITION IN ORIGINAL WRAPS OF THE INVENTION OF THE DOUBLE FOCUSING SPECTROMETER. In 1936, Kenneth Bainbridge and Edward Jordan built a double focusing spectrometer at Harvard University. In 1919 Aston developed the first really good mass spectrograph, an instrument for measuring the masses of isotopes; his apparatus gave accuracies..... More