In:
The Journal of Chemical Physics, AIP Publishing, Vol. 108, No. 3 ( 1998-01-15), p. 826-829
Abstract:
The dipolar Hamiltonian in a rapidly rotating sample is scaled by the second Legendre polynomial of the cosine of the angle between the rotation axis and the static magnetic field. It is, therefore, possible to refocus the spatial polarization-transfer process, often termed spin diffusion, in extended spin systems by reorienting the rotor axis such that the dipolar interaction Hamiltonian changes sign. We present experimental results which demonstrate that a rapid mechanical sample reorientation leads to a time reversal of the “radio-frequency-driven” spin diffusion among C13 spins.
Type of Medium:
Online Resource
ISSN:
0021-9606
,
1089-7690
Language:
English
Publisher:
AIP Publishing
Publication Date:
1998
detail.hit.zdb_id:
3113-6
detail.hit.zdb_id:
1473050-9
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