ISOTHERMAL ANNEALING BELOW 60 K OF DEUTERON IRRADIATED NOBLE METALS. Technical Report No. 11

Technical Report · Sun Sep 01 04:00:00 EDT 1957

DOI:https://doi.org/10.2172/4343746· OSTI ID:4343746

Magnuson, G D; Palmer, W; Koehler, J S

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)

• Research Organization: Illinois. Univ., Urbana
• NSA Number: NSA-12-002916
• OSTI ID: 4343746
• Report Number(s): AECU-3587
• Country of Publication: United States
• Language: English

Related Subjects

ACTIVATION
ANNEALING
DEBYE TEMPERATURE
DEUTERONS
ELECTRIC CONDUCTIVITY
ENERGY
IRRADIATION
LATTICES
LOW TEMPERATURE
METALS
MINERALOGY, METALLURGY, AND CERAMICS
NOBLE METALS
OSCILLATIONS
SILVER
SPECTRA
TEMPERATURE