- Conference date: 22–26 March 2009
- Location: Monterey (California)
Small ( ) polystyrene shells filled with either pressurized argon gas or boron powder have been fired into DIII‐D plasmas for disruption mitigation experiments. The pellet shells were observed to burn up at ρ≈0.5, roughly consistent with ablation rate calculations. Pellet slowing from 350 m/s down to 100 m/s was observed, which is not well‐understood at present. Negligible plasma current contraction or MHD onset were seen as a result of the shell burn‐up in the plasma edge, consistent with calculations. The pellet payloads were observed to ionize rapidly in the pellet vicinity (<1 cm radius) and rapid (<15 ms) mixing through the plasma core was observed.
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