Beckett, P., et al., Field dependence of the relaxation of 79Br in KBr and its use as a temperature calibrant. J. Magn. Reson., 2012. 223(0): p. 61-63.
The longitudinal relaxation time of 79Br nuclei in KBr is field independent, between 4.7 T and 14.1 T. The results suggest that inconsistencies in the literature are due to differences in the experimental set-ups. The limitations of KBr as temperature calibrant are discussed.