ENERGY RELEASE IN REACTOR-IRRADIATED COPPER. PART II. 600 TO 700 K RELEASE

Journal Article · Sat Apr 01 04:00:00 EST 1961 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.122.53· OSTI ID:4053384

Blewitt, T H; Sekula, S T; Diehl, J

The energy release associated with the recovery peak occurring between 600 and 700 deg K in neutron-irradiated copper was measured utilizing a new technique, that of nuclear heating. Following a bombardment at 40 deg C of 1.7 x lO/sup 20/ fast neutrons of a l/E distribution which raised the critical shear stress to 12.8 kg/mm/sup 2/ at 4.2"K (5.2 kg/mm/sup 2/ at 300 deg K), a release of 7.7 cal/mole was measured. Using this measured value of the energy release it is possible to estimate the number of defects annihilated if it is assumed that the annealing is the result of the migration and subsequent annihilation of a single defect. In this way the number of interstitials, vacancies, interstitial- vacancy pairs, and dislocation lines required to account for the measured energy release were estimated. The values were, respectively, 5 x lO/sup 19/ per mole, 2 x lO/sup 20/ per mole, 4 x lO/sup 19/ per mole, and 1 x lO/sup 12/ cm per mole. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• NSA Number: NSA-15-015635
• OSTI ID: 4053384
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 122; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANNEALING
ANNIHILATION
CHEMISTRY
COPPER
DEFECTS
DISLOCATIONS
DISTRIBUTION
ENERGY
FAST NEUTRONS
HEATING
INTERSTITIAL ATOMS
IRRADIATION
LATTICES
MEASURED VALUES
RESEARCH REACTORS
STRESSES
TENSILE PROPERTIES
VACANCIES