These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: High magnetic field gradient PGSE NMR in the presence of a large polarizing field.
    Author: Callaghan PT, Komlosh ME, Nyden M.
    Journal: J Magn Reson; 1998 Jul; 133(1):177-82. PubMed ID: 9654483.
    Abstract:
    A description is given of pulsed gradient spin echo (PGSE) NMR experiments in which large pulsed magnetic field gradients may be required. The design contraints are discussed and, in particular, the problem of the use of large pulsed magnetic field gradients in conjunction with large polarizing fields is considered. Issues addressed concern probe mechanical assembly, current supply requirements, and pulse shape design. We describe a quadrupolar coil with a gradient amplitude of 1.65 T m-1 A-1 which has been used successfully up to a maximum gradient of around 40 T m-1. A diffusion coefficent of 7.5 x 10(-16) m2 s-1 has been measured using this system, the lowest yet achieved by PGSE NMR methods. Copyright 1998 Academic Press.
    [Abstract] [Full Text] [Related] [New Search]