Abstract
By means of coherent neutron scattering the temperature dependence of density fluctuations of deuterium in niobium has been measured for three concentrations (2.3, 9.8, and 18% D/Nb). Depending on the scattering vector, the extrapolation to the stability curve for these fluctuations yields temperatures, which are from 2 to 7 times lower than the stability curve for macroscopic fluctuations. Both suppression and anisotropy of the short wavelength stability curves are attributed to the existence of elastic interaction between deuterium atoms.
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The authors are indebted to Prof. H. Wagner, Prof. R. Bausch, to Dr. H. Trinkaus and to Dr. N. Stump for valuable discussions. They further thank Dr. H. Wenzl, Mr. M. Beyß and Mr. K.H. Klatt for assistance on preparation of the scattering sample, Mr. A. Broch for assistance during the scattering experiments and Dr. K. Mika and Mr. E. Seitz for the help in data processing.
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Conrad, H., Bauer, G., Alefeld, G. et al. The stability curve for short wavelength density fluctuations of deuterium in niobium. Z. Physik 266, 239–244 (1974). https://doi.org/10.1007/BF01668846
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DOI: https://doi.org/10.1007/BF01668846