Contribution to the Study of Vacancies in Silver and Uranium; CONTRIBUTION A L'ETUDE DES LACUNES DANS L'ARGENT ET L'URANIUM

Thesis/Dissertation · Sun Dec 31 23:00:00 EST 1961

OSTI ID:4769950

Quere, Y

In metals, high-temperature vacancies cam be retained by quenching. Results are given for the quenching of uranium (in liquid helium) and of silver (in liquid nitrogen). In this last case the energy of formation (1.06 ev) and the energy of mobility (0.86 ev) of the vacancies were measured as well as the energy of mobility of the divacancies (0.58 ev). If the quenching is slow, it is shown that it is possible to trap the vacancies on the impurities of the metal. This leads to increases in the electrical resistivity observed by armealing after quenching, the vacancies being released before disappearing into sinks. The vacancyimpurity binding energy (the impurity being probably oxygen which is present in the silver used at a concentration of 20 ppm atom) can thus be estimated to be 0.4 ev. (auth)

• Research Organization: France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
• NSA Number: NSA-17-001925
• OSTI ID: 4769950
• Report Number(s): CEA-2116
• Country of Publication: France
• Language: English

Related Subjects

ANNEALING
BINDING ENERGY
COOLING
DEFECTS
DIFFUSION
ELECTRIC CONDUCTIVITY
ENERGY
HEAT TREATMENTS
HELIUM
HIGH TEMPERATURE
IMPURITIES
LOW TEMPERATURE
MEASURED VALUES
METALS, CERAMICS, AND OTHER MATERIALS
MOTION
NITROGEN
QUENCHING
SILVER
URANIUM
VACANCIES