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Fission gas swelling and long range migration at low temperatures (LWBR Development Program)

Technical Report ·
OSTI ID:6747176
Fission gas behavior at temperatures below approximately 1100/sup 0/C is assumed to consist of gas bubble nucleation and coalescence through random motion of the bubbles and then complete bubble destruction by subsequent fission events. A model is proposed describing the gas behavior based on a modified form of Van der Waal's gas law for very small bubbles. A bubble is assumed to move inversely to the cube of its radius. Long range migration of gas bubbles to grain boundaries is also predicted and the swelling due to gas motion in the grain boundaries is calculated. (NSA 30: 12017)
Research Organization:
Bettis Atomic Power Lab., Pittsburgh, PA (USA)
OSTI ID:
6747176
Report Number(s):
WAPD-TM-1124
Country of Publication:
United States
Language:
English