We report on the specific techniques associated with experiments with the i
nterferometer for very-cold neutrons at the Institute Laue-Langevin (ILL).
Two recent experiments are presented: one to measure the gravitational phas
e shift to high precision and one to demonstrate the non-dispersivity of th
e scaler Aharonov-Bohm effect for neutrons, (C) 2000 Elsevier Science B.V.
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