Determination by polarization analysis of the scattering amplitudes a+ and a- and of the degree of orientation of nuclei polarized by hyperfine fields in magnetically ordered substances |
| |
Authors: | EF Bertaut |
| |
Institution: | C.N.R.S. and C.E.N.G., Grenoble, France |
| |
Abstract: | Improvements of the Ito-Shull techniques are suggested for measuring the scattering amplitudes a+ and a- associated with the compound states and which are formed by the nucleus of spin I and the incident neutron. In ferro- and ferri-magnets one can increase the sensitivity by suppressing the electronic part of the magnetic scattering when polarizing the neutrons along the scattering vector. In anti-ferromagnets one can separate the nuclear magnetic part by substracting the electronic magnetic scattering with unpolarized neutrons from the total magnetic scattering (electronic + nuclear) obtained by measuring the spin-flip amplitudes U+- or U-+. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |