Using Nuclear Resonance Time Domain Interferometry to study Relaxation Times of Glycerol and other Liquids

Nuclear resonance time domain interferometry (NR-TDI) is a new spectroscopy method used to study the slow dynamics of liquids at the atomic and molecular length scales. By employing a new method of using a stationary two-line magnetized ⁵⁷Fe foil as a source and a stationary single-line stainless steel foil analyzer. Our new technique of adding an annular slit before the silicon avalanche photodiode (APD) detector enables a wide range of momentum transfers 1 to 100 nm^-1 with high count rates of up to 160 Hz with a Dq resolution of ±1.7 nm^-1. The Kohlrausch-Williams-Watts (KWW) model was used to extract relaxation times for glycerol ranging from 2 to 600 ns as a function of temperature through the glass transition. These relaxation times give insight into the dynamics of the electron density fluctuations of glycerol as a function of temperature and momentum transfers.