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John Herbert Beynon
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LOCATION: Swansea SA2 8PP, United Kingdom

BIOGRAPHY

Royal Society Research Professor Emeritus, University College of Swansea, University of Wales. Author of Mass Spectrometry and Its Application to Organic Chemistry.

Primary Contributions (1)
Figure 1: An electron bombardment ion source in cross section. An electron beam is drawn from the filament and accelerated across the region in which the ions are formed and toward the electron trap. An electric field produced by the repeller forces the ion beam from the source through the exit slit.
Mass spectrometry, analytic technique by which chemical substances are identified by the sorting of gaseous ions in electric and magnetic fields according to their mass-to-charge ratios. The instruments used in such studies are called mass spectrometers and mass spectrographs, and they operate on…
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