Fundamental Physics Highlights

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Neutron experiments give unprecedented look at quantum oscillations
— Researchers at the Department of Energy's Oak Ridge National Laboratory have found that nitrogen atoms in the compound uranium nitride exhibit unexpected, distinct vibrations that form a nearly ideal realization of a physics textbook model known as the isotropic quantum harmonic oscillator.

Beam Line 13 Fuels Discovery Fever for Fundamental Physicists
— Kucuker Dogan (left) and Matthew Musgrave prepare a helium-3 cooling cell that is used to measure the angle at which the neutron beam strikes the liquid hydrogen sample.

Fast Proton Hopping in Ice (Ih) Confirmed by Quasi-Elastic Neutron Scattering
— Protons (positive hydrogen ions) in an ice lattice have been “seen” to fast hop from one water molecule to another, using quasi-elastic neutron scattering at the SNS Backscattering Spectrometer, BASIS. This fundamental phenomenon that occurs at very low temperatures has important consequences for future investigations of proton conductivity in solids.


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