THERMAL ANNEALING OF GRAPHITE STORED ENERGY

Technical Report · Fri Mar 28 04:00:00 EST 1958

OSTI ID:4304786

Davidson, J M

A result of neutron irradiation on graphite is the generation of crystal defects. These defects may take the form of vacancies, interstitial carbon atoms, or groups as well as crystal warpage, general breakup, and resultant stresses. Stored energy is a result of this damage and may be released in annealing processes which result in a more stable arrangement of the graphite lattice. This energy appears as an inereased heat of combustion; it may also be measured as an apparent decrease of specific heat. If at any time the stored energy instantaneously becomes greater than the true specific heat. It may possibly take the form of a measurable heat release. The samples used were selected from 30 and 400 deg C irradiations with exposures up to about 5000 Mwd/ at. X-ray measurements of the samples were made at all stages of treatment. (auth)

• Research Organization: General Electric Co. Hanford Atomic Products Operation, Richland, Wash.
• DOE Contract Number: W-31-109-ENG-52
• NSA Number: NSA-13-000922
• OSTI ID: 4304786
• Report Number(s): HW-54069
• Country of Publication: United States
• Language: English

Related Subjects

ANNEALING
CELLULOID
CRYSTALS
DEFECTS
DIFFRACTION
ENERGY
EYES
GRAPHITE
LATTICES
MAN
NEUTRONS
POLYESTERS
RADIATION DOSES
RADIATION EFFECTS
RADIATION EFFECTS ON MATERIALS
RADIOTHERAPY
SHIELDING
SPECIFIC HEAT
STRESSES
TEMPERATURE
TISSUES
UVEA
VACANCIES
WIGNER EFFECT
X RADIATION