Author(s): Nanette N. Jarenwattananon and Louis-S. Bouchard
A revised theory for diffusion-based nuclear magnetic resonance shows that the linewidth decreases with temperature for gasses. This finding is contrary to the behavior seen in fluids and therefore allows gasses and liquids to be distinguished by their linewidth behavior.

[Phys. Rev. Lett. 114, 197601] Published Tue May 12, 2015