Recrystallization and fission-gas-bubble swelling of U–Mo fuel

2013 ◽  
Vol 436 (1-3) ◽  
pp. 14-22 ◽  
Author(s):  
Yeon Soo Kim ◽  
G.L. Hofman ◽  
J.S. Cheon
Keyword(s):  
Gas Bubble ◽  
Fission Gas

A new non-diffusional gas bubble production route in used nuclear fuel: implications for fission gas release, cladding corrosion, and next generation fuel design

2020 ◽  
Vol 22 (11) ◽  
pp. 6086-6099 ◽  
Author(s):  
Jon M. Schwantes ◽  
Jacob L. Bair ◽  
Edgar C. Buck ◽  
Ram Devanathan ◽  
Sean H. Kessler ◽  
...  
Keyword(s):  
Phase Particle ◽  
Gas Bubble ◽  
Gas Release ◽  
Used Nuclear Fuel ◽  
Production Route ◽  
Fission Gas ◽  
Fuel Design ◽  
Phase Map ◽  
Fission Gas Release ◽  
Bubble Production

“Phase” map showing Noble metal phase particle (orange) and U fuel fragments (green and yellow) ejected into Zr cladding (red and blue) as a result of Xe bubble rupture.

scholarly journals Thermal stability of fission gas bubble superlattice in irradiated U–10Mo fuel

2015 ◽  
Vol 464 ◽  
pp. 1-5 ◽  
Author(s):  
J. Gan ◽  
D.D. Keiser ◽  
B.D. Miller ◽  
A.B. Robinson ◽  
D.M. Wachs ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Gas Bubble ◽  
Fission Gas ◽  
Thermal Stability Of

Sensitivity of Thermal Transport in Uranium Dioxide to Fission Gas

2019 ◽  
Author(s):  
Katherine Mitchell ◽  
Hunter Horner ◽  
Alex Resnick ◽  
Jungkyu Park ◽  
Eduardo B. Farfán ◽  
...  
Keyword(s):  
Thermal Resistance ◽  
Uranium Dioxide ◽  
Thermal Transport ◽  
Temperature Drop ◽  
Phonon Transport ◽  
Interfacial Thermal Resistance ◽  
Large Temperature ◽  
Gas Bubble ◽  
Gas Generation ◽  
Fission Gas

Abstract Understanding the effect of fission gas generation on thermal resistance in various nuclear fuels is critical for managing fuel performance. Fission gas in the fuels degrades its thermal properties by altering the lattice vibrations. It results in thermal expansion that increases the thermal resistance and decreases the structural stability of the fuels. In this research, thermal transport in uranium dioxide is studied at a microscopic level when Xe and Kr gasses interact with uranium and oxygen atoms. Reverse non-equilibrium molecular dynamics (RNEMD) is used to calculate the thermal resistances and provide an understanding about the effect of the fission gas release on phonon transport. The results show that the thermal conductivity of uranium dioxide is decreased nearly by 78% by the presence of only one fission gas bubble. The thermal transport in uranium dioxide is shown to become highly diffusive by a single fission gas bubble and a large temperature drop in temperature profiles are observed in all simulation structures with fission gas bubbles. The average interfacial thermal resistance across a fission gas bubble is estimated to be 2.1 × 10−9 Km2/W.

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