ISSN:
1572-9540
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract Positive muon Knight shifts and relaxation rates were measured at room temperature in a graphite crystal and in a stack of Grafoil sheets. The Knight shift was ≈ 500 ppm in the single crystal and reduced by 0.702 in Grafoil. Both have the same (large) fractional anisotropy relative to theĉ axis or to the normal to the Grafoil sheets, respectively. The (isotropic) relaxation rates were 0.024(4)μs−1 in the crystal and 0.194(6)μ −1 in the Grafoil. Apparently theμ + in Grafoil “sees” highly aligned bulk crystalline graphite, and does not reach the surfaces of the sheets.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF02065930