The nuclear spin temperature is believed to be preserved indefinitely after the formation of a molecule, and hence gives an estimate of the temperature prevailing at the time of the last condensation of the ice.
Not exact matches
Steger et al. (p. 1280) demonstrate that the
nuclear spins of 31P impurities in an almost isotopically pure sample of 28Si can have a coherence time of as long as 192 seconds at a
temperature of ∼ 1.7 K.
Until the new study, «nobody has ever shown it directly» at room
temperature by turning
nuclear spins to change an electrical current, he adds.
The paper is titled «Room -
temperature in situ
nuclear spin hyperpolarization from optically pumped nitrogen vacancy centers in diamond.»
In our paper we demonstrate an efficient scheme that realises laser induced 13C
nuclear spin hyperpolarization in a bulk diamond at room
temperature and low ambient magnetic field.
However, the generation of a singlet state of
nuclear spins in experiments by using unitary preparation is extremely difficult at room
temperature.