A low-power super-regenerative oscillator nuclear quadrupole linewidth study of hexamethylenetetramine from 77 to 379 K
Abstract
The inverse linewidth parameter T*2 was measured with a super-regenerative oscillator (low-power pulsed) nuclear quadrupole spectrometer from 77 to 379 K for hexamethylenetetramine, HMTA. The relaxation changed from Gaussian to Lorentzian between 310 and 350 K. T1 data were used to analyse this change. Dipole–dipole second-moment calculations were made.