Abstract
The cross-relaxation time ${\mathrm{\ensuremath{\tau}}}_{\mathit{x}}$ between the Zeeman temperatures of the $^{107}\mathrm{Ag}$ and $^{109}\mathrm{Ag}$ spin species in silver metal has been measured over five decades at low nanokelvin temperatures as a function of the external magnetic field B. Besides increasing with B, ${\mathrm{\ensuremath{\tau}}}_{\mathit{x}}$ decreases with spin polarization. From the data, the strength of the Ruderman-Kittel interaction between the nuclei is determined. These experiments demonstrate that thermal equilibrium is not reached via mutual flips of unlike spins, but in much slower processes involving single spin flips, caused by the dipolar interaction.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call