NMR investigation of the magnetic susceptibility anisotropy in3He-A

Autor: Richard Haley, H. E. Hall, J. R. Hook, Antti Manninen, Fergus Clancy, Allen Armstrong
Jazyk: angličtina
Rok vydání: 1995
Předmět:
Zdroj: Haley, R, Armstrong, A, Clancy, F, Manninen, A, Hook, J & Hall, H 1995, ' NMR investigation of the magnetic susceptibility anisotropy in 3 He-A ', Journal of Low Temperature Physics, vol. 101, no. 3-4, pp. 787-792 . https://doi.org/10.1007/BF00753391
ISSN: 1573-7357
0022-2291
DOI: 10.1007/BF00753391
Popis: 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 μm 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.
Databáze: OpenAIRE
Externí odkaz: