Glory Oscillations in the Index of Refraction for Matter-Waves

Details Glory Oscillations in the Index of Refraction for Matter-Waves Glory Oscillations in the Index of Refraction for Matter-Waves

2002-03-05

arxiv.org/abs/physics/0203008v1

Physics

Atomic Physics

Scientific paper

10.1103/PhysRevLett.89.200406

We have measured the index of refraction for sodium de Broglie waves in gases of Ar, Kr, Xe, and nitrogen over a wide range of sodium velocities. We observe glory oscillations -- a velocity-dependent oscillation in the forward scattering amplitude. An atom interferometer was used to observe glory oscillations in the phase shift caused by the collision, which are larger than glory oscillations observed in the cross section. The glory oscillations depend sensitively on the shape of the interatomic potential, allowing us to discriminate among various predictions for these potentials, none of which completely agrees with our measurements.

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