| Autor: |
Maier, K., Vianden, R., Jänsch, H. J., Löser, H., Voss, A., Fick, D. |
| Zdroj: |
HFI/NQI 2004; 2005, p491-495, 5p |
| Abstrakt: |
Diffusion measurements on lithium atoms adsorbed on a ruthenium single crystal were performed in the high temperature regime (1100-1200 K). Pulsed NMR techniques were utilized to produce and observe the decay of magnetization patterns from which the diffusion coefficient was extracted. The observed temperature dependence could be described by D = (10 ± 7) cm2/s · exp (−(0.46 ± 0.07) eV/kT). The extremely high diffusion coefficient and prefactor are understood by a gas like adsorbate behavior. The electric field gradient has been measured with 7Li: Vzz = −5.0 ± 0.1 1015 V/cm2 with an inhomogeneity of less then 1% as judged by the width of the satellite transitions. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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