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NMR investigation of the magnetic-susceptibility anisotropy in HE-3-A.

Haley, Richard and Armstrong, Allen and Clancy, Fergus and Manninen, Antti and Hook, John and Hall, Henry (1995) NMR investigation of the magnetic-susceptibility anisotropy in HE-3-A. Journal of Low Temperature Physics, 101 (3-4). pp. 787-792. ISSN 0022-2291

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Abstract

We have investigated transverse continuous wave NMR in a geometry where the modes are influenced by susceptibility anisotropy. The helium sample is separated by mylar foils into layers 12 mu m thick perpendicular to the external dc magnetic field. In this geometry l is constrained to be parallel to the field and d switches from parallel to perpendicular to the field over a small range of field around the dipole unlocking field. The mode frequencies below this critical field yield a value for the susceptibility anisotropy. Above the critical field the expected negative frequency shift is observed, as well as a positive frequency shift due to bulk material and an unexpected signal close to the Larmor frequency.

Item Type: Article
Journal or Publication Title: Journal of Low Temperature Physics
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 23511
Deposited By: Dr Richard P. Haley
Deposited On: 03 Feb 2009 08:59
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 16:10
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/23511

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