A Ramsey apparatus for the measurement of the incoherent neutron scattering length of the deuteron

• DOI: 10.1016/j.nima.2008.02.020
• Publication Date: 2008-02-25T20:03:23Z
• Authors: F.M. Piegsa; B. van den Brandt; H. Glättli; P. Hautle; J. Kohlbrecher; J.A. Konter; B.S. Schlimme; O. Zimmer
• Keywords: 0103 physical sciences; 01 natural sciences; 7. Clean energy

Abstract A Ramsey apparatus for cold, polarised neutrons is described, which enables us to measure neutron precession angles with an absolute accuracy of about 1 ∘ . This is necessary to perform a planned high-accuracy measurement of the incoherent neutron scattering length b i , d of the deuteron. The performance of the apparatus is demonstrated in systematic stability measurements as well as in two selected examples using samples containing polarised nuclear spins.