M. Hino et al., NEUTRON OPTICS AND NEUTRON FORWARD-SCATTERING USING A TRANSVERSE NEUTRON-SPIN-ECHO INSTRUMENT, Physica. B, Condensed matter, 213, 1995, pp. 842-844
A new principle of neutron-spin-echo (NSE) method is proposed for neut
ron optics and neutron forward-scattering experiments. The essential o
f this method is to set a sample in one of the Larmor precession field
s, This sample geometry gives new physical information, in particular
the refractive index of neutrons for a Si single crystal which was det
ermined to be 1 - (1.85 +/- 1.16) x 10(-5) at 5.7 Angstrom.