AI Article Synopsis
- The Large Helical Device experiments revealed that heat pulses travel quickly and non-diffusively, with speed increasing as the pulse duration decreases.
- There is a simultaneous movement of temperature gradients and turbulence, occurring over milliseconds, which fits the avalanche model's predictions.
- These findings suggest that tighter, localized pulses lead to more instability in plasma, highlighting important considerations for maintaining steady-state conditions in future fusion reactors.
Article Abstract
The experimental findings from the Large Helical Device have demonstrated a fast, nondiffusive behavior during the propagation of heat pulses, with an observed increase in speed with reduction in their temporal width. Concurrent propagation of the temperature gradient and turbulence, in a timeframe spanning from a few milliseconds to tens of milliseconds, aligned with the avalanche model. These results indicate that the more spatiotemporally localized the heat and turbulence pulses are, the greater the deviation of the plasma from its equilibrium state, coupled with faster propagation velocity. This insight is pivotal for future fusion reactors, which necessitate the maintenance of a steady-state, non-equilibrium condition.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11156975 | PMC |
| http://dx.doi.org/10.1038/s41598-024-63788-0 | DOI Listing |
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