Precision measurement of the coherent neutron scattering length of 3He through neutron interferometry W. Ketter, W. Heil, G. Badurek, M. Baron, E. Jericha, R. Loidl and H. Rauch Eur. Phys. J. A, 27 2 (2006) 243-256 Published online: 29 March 2006 DOI: 10.1140/epja/i2005-10267-y