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Published October 1950 | Published
Journal Article Open

A Magnetic Analyzer for Charged‐Particles from Nuclear Reactions


A double‐focusing magnetic spectrometer for detecting and analyzing charged particles from nuclear reactions is described. The magnetic field, varying as r^(−½) near an average radius of 10.5 in., extends over a semicircle yielding object and anastigmatic image positions some distance outside of the region of strong field. The acceptance solid angle is Ω=0.0061 sterad. and the momentum resolution with an 8‐mm slit at the detector is R=128. The ultimate resolution determined by spherical aberration and some residual astigmatism is about 1000. Applications to the study of the energy and yield of nuclear reaction products are discussed.

Additional Information

© 1950 American Institute of Physics. Received 23 June 1950. In conclusion we wish to thank Professor R. F. Christy and Dr. D. L. Judd for many illuminating discussions of this paper. This work was assisted by the joint program of the ONR and AEC.

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October 17, 2023