Expansion of Copper Upon Low Temperature Deuteron Irradiation. Technical Report No. 12

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Average value of the specific change in length per deuteron per cm/sup 2/ for 8.5-Mev deuterons is 3.8 x l0/sup 21/. This expansion was observed to be a linear function of iniegrated flux. Using a value of l.5 v/sub a/, where v/sub a/ is the atomic volume, for the volume increase due to a Frenkel pair in copper, the calculated concentration of defects is 1/6 that predicted by the simple theory of Seitz and Koehler, nnd DELTA a/ DELTA a/sub max/ equals DL/L to ll% during irradiation on the assumption that the energy dependence of deuteron dnmage in copper varies … continued below

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Vook, R. W. September 1, 1957.

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Average value of the specific change in length per deuteron per cm/sup 2/ for 8.5-Mev deuterons is 3.8 x l0/sup 21/. This expansion was observed to be a linear function of iniegrated flux. Using a value of l.5 v/sub a/, where v/sub a/ is the atomic volume, for the volume increase due to a Frenkel pair in copper, the calculated concentration of defects is 1/6 that predicted by the simple theory of Seitz and Koehler, nnd DELTA a/ DELTA a/sub max/ equals DL/L to ll% during irradiation on the assumption that the energy dependence of deuteron dnmage in copper varies inversely with the deuteron energy. Where comparison is possible, recovery of DELTA L/ DELTA L/sub max/ follows that of DELTA a/ DELTA a/sub max/ to bettcr than l0%. For DELTA L/ DELTA L/sub max/ 64% of the damage anneals in Stage l (< 70 deg K), 6% anneals in Stage II (70 to l80 deg K) 26% anneals in Stage III (l80 to 300 deg K), and 4% remains at 300 deg K. (auth)

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

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  • September 1, 1957

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Vook, R. W. Expansion of Copper Upon Low Temperature Deuteron Irradiation. Technical Report No. 12, report, September 1, 1957; Urbana, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1021044/: 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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