Isothermal Annealing Below 60 K of Deuteron Irradiated Noble Metals. Technical Report No. 11

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are as follows: The annealing spectrum in very pure noble metals is simple. In the 15 deg K to 80 deg K range it consists of a number of small peaks followed by a large peak. These peaks in the activation energy spectrum are reasonably produced per primary and that the separation distances of these defects are of the order of two to ten or twenty lattice parameters then it is not too surprising to find some spread in the activation energies, especially since the spread is only of order 0.01 ev. The frequency factor (A/a) is large having a … continued below

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Magnuson, G. D.; Palmer, W. & Koehler, J. S. September 1, 1957.

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are as follows: The annealing spectrum in very pure noble metals is simple. In the 15 deg K to 80 deg K range it consists of a number of small peaks followed by a large peak. These peaks in the activation energy spectrum are reasonably produced per primary and that the separation distances of these defects are of the order of two to ten or twenty lattice parameters then it is not too surprising to find some spread in the activation energies, especially since the spread is only of order 0.01 ev. The frequency factor (A/a) is large having a value in the range between 7.2 x 10/sup 10/ and 3.9 x 10/sup 12/ for both copper and silver. The Rebye characteristic temperature decreases on irradiation. For copper the decrease after 2.5 x 10/sup 16/ deuterons per cm/sup 2/ was 15 deg K, for silver the decrease was 10 deg K. Most of this change anneals out on warming to 50 deg K. Alloying tends to make the annealing more nearly a continuous process with a wide range of activalion energies. No large low temperature drop in resistivity was found for pure gold in the range 12 deg K to 50 deg K. (auth)

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Other Information: Orig. Receipt Date: 31-DEC-58

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Magnuson, G. D.; Palmer, W. & Koehler, J. S. Isothermal Annealing Below 60 K of Deuteron Irradiated Noble Metals. Technical Report No. 11, report, September 1, 1957; Urbana, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1017782/: accessed July 14, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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