Frequency shifts and relaxation rates for spin 1/2 particles moving in electromagnetic fields
Atomic Physics
2015-11-24 v2
Abstract
We discuss the behaviour of the Larmor frequency shift and the longitudinal relaxation rate due to non-uniform electromagnetic fields on an assembly of spin 1/2 particles, in adiabatic and nonadiabatic regimes. We also show some general relations between the various frequency shifts and between the frequency shifts and relaxation rates. The remarkable feature of all our results is that they were obtained without any specific assumptions on the explicit form of the correlation functions of the fields. Hence, we expect that our results are valid both for diffusive and ballistic regime of motion and arbitrary cell shapes and surface scattering. These results can then be applied to a wide variety of realistic systems.
Keywords
Cite
@article{arxiv.1509.04655,
title = {Frequency shifts and relaxation rates for spin 1/2 particles moving in electromagnetic fields},
author = {G. Pignol and M. Guigue and A. Petukhov and R. Golub},
journal= {arXiv preprint arXiv:1509.04655},
year = {2015}
}