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- W1542385912 abstract "Injecting high speed frozen pellets of D2,T2 has been proposed as a means of continuously fueling a tokamak reactor /1,2/. Pellets, being neutral, can penetrate across the confining magnetic fields. Furthermore, they can penetrate the plasma, since the ablation cloud surrounding the surface shields the pellet from the intense energy flux of the plasma. Several experiments /3-7/ have been conducted to inject frozen pellets into tokamaks. A neutral shielding ablation theory /8-11/ has been developed to explain the results of these experiments and has been used to simulate pellet fueling of the Fusion Engineering Device (FED) reactor study plasma /12/. Deuterium and tritium pellets 4 mm in diameter, injected at a speed of 2 km/s and a rate of 20 pellets/s, are shown to directly fuel 60% of the plasma volume, as opposed to 5% for gas injection. A pellet injector development program /13/ has been under way at the Oak Ridge National Laboratory (ORNL) since 1976 with the goals of developing D2,T2 pellet fuel injectors capable of reliable repetitive fueling of reactors and of continued experimentation on contemporary plasma devices. The development has focused primarily on two types of injectors that show promise. One of these injectors is the centrifuge-type injector, which accelerates pellets in a high speed rotating track. The other is the gas or pneumatic gun, which accelerates pellets in a gun barrel using compressed helium or H2 gas." @default.
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- W1542385912 date "1983-01-01" @default.
- W1542385912 modified "2023-09-26" @default.
- W1542385912 title "PELLET FUELING DEVELOPMENT AT OAK RIDGE NATIONAL LABORATORY" @default.
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- W1542385912 doi "https://doi.org/10.1016/b978-1-4832-8374-6.50226-4" @default.
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