Abstract
F. BLOCH1 has recently pointed out the possibility of producing partly polarized neutron beams, that is, beams which contain more neutrons of one direction of spin than of the other. The method consists in passing a beam of slow neutrons through a plate of magnetized iron, the polarizer; the polarization of the beam can be demonstrated by passing it through another iron plate, the analyser: a change in the intensity of the beam would be expected, according to Bloch, on reversing the magnetization of the analyser. Such a change has in fact been observed by Hoffman, Livingston, and Bethe2.
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References
Bloch, Phys. Rev., 50, 259 (1936).
Hoffman, Livingston, Bethe, Phys. Rev., 51, 214 (1937).
Estermann, Stern, Z. Phys., 85, 17 (1933).
Kellogg, Rabi, Zacharias, Phys. Rev., 50, 472 (1936).
Estermann, Stern, Phys. Rev., 45, 761 (1934).
Powers, Beyer, Dunning, Phys. Rev., 51, 371 (1937).
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FRISCH, O., VON HALBAN, H. & KOCH, J. A Method of Measuring the Magnetic Moment of Free Neutrons. Nature 139, 756–757 (1937). https://doi.org/10.1038/139756a0
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DOI: https://doi.org/10.1038/139756a0
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