Physics – Quantum Physics
Scientific paper
2010-08-05
J. Chem. Phys. 134, 034102 (2011)
Physics
Quantum Physics
12 pages, 5 figures
Scientific paper
10.1063/1.3528040
We study the decay of multiple quantum (MQ) NMR coherences in systems with the large number of equivalent spins. As being created on the preparation period of MQ NMR experiment, they decay due to the dipole-dipole interactions (DDI) on the evolution period of this experiment. It is shown that the relaxation time decreases with the increase in MQ coherence order {(according to the known results)} and in the number of spins. We also consider the modified preparation period of MQ NMR experiment (G.A.Alvarez, D.Suter, PRL {\bf 104}, 230403 (2010)) concatenating the short evolution periods under the secular DDI Hamiltonian (the perturbation) with the evolution period under the non-secular averaged two-spin/two-quantum Hamiltonian. The influence of the perturbation on the decoherence rate is investigated for the systems consisting of 200-600 equivalent spins.
Doronin Sergei I.
Fel'dman Edward B.
Zenchuk Alexander I.
No associations
LandOfFree
Numerical analysis of relaxation times of multiple quantum coherences in the system with a large number of spins does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Numerical analysis of relaxation times of multiple quantum coherences in the system with a large number of spins, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Numerical analysis of relaxation times of multiple quantum coherences in the system with a large number of spins will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-438382