Neutron-interferometric measurement of the coherent scattering length of the isotopes of silver |
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Authors: | U. Bonse U. Kischko |
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Affiliation: | 1. Institut für Physik der Universit?t, Dortmund, Federal Republic of Germany 2. Institut für Physik der Universit?t, Dortmund, Federal Republic of Germany 3. Institute Laue-Langevin, Grenoble, France
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Abstract: | Employing a new measuring scheme with the D 18 Neutron Interferometer at the ILL, Grenoble, the thermal neutron coherent scattering lengthb c for bound atoms of natural Ag,107Ag and109Ag have been measured at the wavelengthλ=1.8742 Å. The results, corrected for composition and density of the actual samples, are nat Ag:b c =5.922 (7) fm107Ag:107 b c =7.555 (11) fm109Ag:109 b c =4.165 (11) fm The result is in agreement with an earlier value obtained with the interferometer for nat Ag (5.932 (6)) using a different measuring scheme and a totally different sample. For nat Ag and107Ag the values determined interferometrically are ?0.05 and ?0.08 fm smaller, repectively, than those measured with the Christiansen filter method. |
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