A mixed basis approach in the SGP-limit
Artikel i vetenskaplig tidskrift, 2011

A perturbation method for computing quick estimates of the echo decay in pulsed spin echo gradient NMR diffusion experiments in the short gradient pulse limit is presented. The perturbation basis involves (relatively few) dipole distributions on the boundaries generating a small perturbation matrix in O(s(2)) time, where s denotes the number of boundary elements. Several approximate eigenvalues and eigenfunctions to the diffusion operator are retrieved. The method is applied to 1D and 2D systems with Neumann boundary conditions.

Restricted diffusion

Initial slope

Narrow pulse approximation

restricted diffusion

simulations

trefftz method

NMR

method

Geometry

Laplace operator

Perturbation

porous systems

SGP-limit

Matrix formulation

field gradient

spin-echo nmr

gradient-pulse approximation

Poisson's equation

diffraction

relaxation

self-diffusion

Författare

Matias Nordin

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Martin Nilsson Jacobi

Chalmers, Energi och miljö, Fysisk resursteori

Magnus Nydén

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Journal of Magnetic Resonance

1090-7807 (ISSN)

Vol. 212 274-279

Ämneskategorier

Biokemi och molekylärbiologi

Fysik

DOI

10.1016/j.jmr.2011.07.002