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Estimation of fuel particle balance in steady state operation with hydrogen barrier model
- Source :
- Nuclear Materials and Energy, Vol 19, Iss, Pp 544-549 (2019)
- Publication Year :
- 2019
- Publisher :
- Elsevier, 2019.
-
Abstract
- This research investigated fuel particle balance during long duration discharge in an all-metal plasma facing wall (PFW) through intensive QUEST execution. A simple wall model including the plasma-induced deposition layer that creates hydrogen (H) barriers, called the H barrier model, was established. A simple calculation, based on a combination of H state rate equations and the H barrier model, was applied to real plasma in the early phase of its longest discharge. The model accurately reconstructed the evolutions of electron density and wall-stored H over time, proper values are chosen for the parameters that are difficult to determine experimentally. Comparative calculations that used the H barrier and a fully reflective models, predicted significant impacts of wall models on the plasma density time response and value of electron density, indicating that a proper wall model should be developed for all-metal PFW devices. Keywords: Fuel particle balance, steady state operation, Hydrogen barrier model, QUEST
- Subjects :
- 010302 applied physics
Nuclear and High Energy Physics
Electron density
Materials science
Steady state
Hydrogen
Materials Science (miscellaneous)
chemistry.chemical_element
Plasma
Rate equation
Mechanics
01 natural sciences
lcsh:TK9001-9401
010305 fluids & plasmas
Nuclear Energy and Engineering
chemistry
0103 physical sciences
Deposition (phase transition)
Particle
lcsh:Nuclear engineering. Atomic power
Early phase
Subjects
Details
- Language :
- English
- ISSN :
- 23521791
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Nuclear Materials and Energy
- Accession number :
- edsair.doi.dedup.....8a6943ecdd830314f91e8fac0105caf0