Stern-Gerlach effect without magnetic-field gradient
Institut für Physik - D-55099 Mainz, Germany
2 TU München, Dep. E21 - D-85747 Garching, Germany
3 TU München, Dep. E13 - D-85747 Garching, Germany
Accepted: 8 November 2000
The Stern-Gerlach effect is the well-known spin-dependent splitting of a neutral particle beam by a magnetic-field gradient. Guided by the pseudomagnetic analogy, we performed a similar experiment where no magnetic-field gradient is involved. The effect is due to the spin-dependence of neutron scattering from polarised nuclei, i.e. caused by the strong interaction between neutrons and nuclei. The beam splitting is proportional to the nuclear polarisation and to the spin-dependent part of the neutron scattering length. Thus it can be used to measure one of both quantities.
PACS: 25.40.Dn – Elastic neutron scattering / 28.20.Cz – Neutron scattering / 61.12.Ex – Neutron scattering techniques (including small-angle scattering)
© EDP Sciences, 2001