Magnet design with high B-0 homogeneity for fast-field-cycling NMR applications
2001 (English)In: Journal of magnetic resonance (San Diego, Calif. 1997: Print), ISSN 1090-7807, E-ISSN 1096-0856, Vol. 149, no 1, 22-28 p.Article in journal (Refereed) Published
The design, construction, and performance of a low-inductance solenoidal coil with high B-0 homogeneity for fast-field-cycling NMR is presented. It consists of six concentric layers. The conductor width is varied to minimize the B-0 inhomogeneity in the volume of the sample. This is done using an algorithm which takes the real shape of the conductor directly into account. The calculated coil geometry can be manufactured easily using standard computerized numeric control equipment, which keeps the costs low. The coil is liquid cooled and produces a B-0 field of 0.95 T at 800 A. The field inhomogeneity in a cylindrical volume (diameter 5 mm, length 10 mm) is about 10 ppm, and the inductance is 190 muH. Switching times below 200 mus can be achieved. During 6 months of operation the coil has shown good stability and reliability.
Place, publisher, year, edition, pages
2001. Vol. 149, no 1, 22-28 p.
zero-field, nqr spectrometer, coil design, relaxation, resonance
IdentifiersURN: urn:nbn:se:kth:diva-20531ISI: 000168078800004OAI: oai:DiVA.org:kth-20531DiVA: diva2:339226
QC 201005252010-08-102010-08-10Bibliographically approved