Spin-dependent scattering lengths of slow neutrons with nuclei by pseudomagnetic measurements
Résumé
The spin-dependent scattering length of slow neutrons by the nuclei 23Na, 59Co, 63Cu, 65Cu, 195Pt, 197Au and 207Pb, as well as the mean value for the two isotopes of Tl and Ag in the natural element have been obtained by measuring the precession of the neutron spins as a function of nuclear polarization. A revised value for 91Zr is also given. The method has been extended for use with magnetic materials. Using f.c.c. and hexagonal cobalt, it is shown that these pseudomagnetic measurements may give precise information on the internal field seen by the nuclei.
Mots clés
nuclear magnetic moment
nuclear polarisation in solids
nuclear reactions and scattering due to neutrons
slow neutrons
pseudomagnetic measurements
sup 23 Na
sup 59 Co
sup 63 Cu
sup 65 Cu
sup 195 Pt
sup 197 Au
sup 207 Pb
Tl
Ag
nuclear polarisation
sup 91 Zr
magnetic materials
spin dependent scattering lengths
neutron spin precession
Domaines
Articles anciensOrigine | Accord explicite pour ce dépôt |
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