@article{8993,
  author = {P. Mulholland and K. Aleynikova and B.J. Faber and M.J. Pueschel and J.H.E. Proll and C.C. Hegna and P.W. Terry and C. Nührenberg},
  title = {Enhanced transport at high plasma pressure and subthreshold kinetic ballooning modes in Wendelstein 7-X},
  abstract = {High-performance fusion plasmas, requiring high pressure B, are not well-understood in stellarator-type experiments. Here, the effect of B on ion-temperature-gradient-driven (ITG) turbulence is studied in Wendelstein 7-X (W7-X), showing that subdominant kinetic ballooning modes (KBMs) are unstable well below the ideal MHD threshold and get strongly excited in the turbulence. By zonal-flow erosion, these sub-threshold KBMs (stKBMs) affect ITG saturation and enable higher heat fluxes. Controlling stKBMs will be essential to allow W7-X and future stellarators to achieve maximum performance.},
  year = {2023},
  journal = {Physical Review Letters},
  volume = {131},
  pages = {185101},
  month = {11/2023},
  publisher = {American Physical Society},
  url = {https://arxiv.org/abs/2306.03694},
  doi = {10.1103/PhysRevLett.131.185101},
  language = {eng},
}