On the "Magic Numbers" in Nuclear Structure

摘要: TTENTION has recently been called to thepossibility of producing polarized neutron beams by reflection from magnetized iron mirrors.'The indices of refractiondiffer for the two neutron spin states, since their magnetic scattering amplitudes are opposite in sign. The resultantdifference in critical angle of total reflection can be used to separate the spin components. For Fe, the coherent nuclear amplitude exceeds the mag-netic amplitude, so that the index of refraction is lessthan one for both spin states, and both are capable of total …