Perturbed angular distribution of recoil implanted F19-nuclei in a nickel-environment |
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Authors: | O. Klepper H. Spehl |
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Affiliation: | 1. Physikalisches Institut der Universit?t Freiburg i. Br., Germany
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Abstract: | Magnetic hyperfine fields acting on F19 in a Nickel lattice have been investigated. Time-dependent spin rotation has been observed following the excitation and recoil implantation with a pulsed proton beam using the reaction F19(p,p′)F19?. Two hyperfine fields were detected at 290 °K:H hf (1) =+17.6 ± 0.5 kGH hf (2) =+91 ± 3 kG. The variation of the effective fields with the external polarizing field was studied. The mean life of the 197 keV level has been remeasured as τ=128±2 nsec. |
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