{
  "annotation_id": "4639e01c-e47e-437a-963f-77085345f2a3",
  "date_created": "2026-03-02T18:01:10.925000Z",
  "date_modified": "2026-03-02T18:01:10.925000Z",
  "file_hash": "2e8169c690750fe4cf30311d9f248cbdae7b896c0ed75262ab1f028daf03900d",
  "private": false,
  "record": {
    "abstract": "The effect of a narrow sub-Alfvenic shear flow layer near the minimum q_min\nof the tokamak safety factor profile in a configuration with reversed central\nshear is analyzed. Sufficiently strong velocity shear gives rise to a broad\nspectrum of fast growing Kelvin-Helmholtz (KH)-like ideal magnetohydrodynamic\n(MHD) modes with dominant mode numbers m,n ~ 10. Nonlinear simulations with\nfinite resistivity show magnetic reconnection near ripples caused by KH-like\nvortices, the formation of turbulent structures, and a flattening of the flow\nprofile. The KH modes are compared to double tearing modes (DTM) which dominate\nat lower shearing rates. The possible application of these results in tokamaks\nwith internal transport barrier is discussed.",
    "arxiv_id": "physics/0607196",
    "authors": [
      "Andreas Bierwage",
      "Qingquan Yu",
      "Sibylle G\u00fcnter"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "doi": "10.1063/1.2435319",
    "journal_ref": "Phys. Plasmas 14, 010704 (2007)",
    "title": "Large-mode-number magnetohydrodynamic instability driven by sheared   flows in a tokamak plasma with reversed central shear",
    "url": "https://arxiv.org/abs/physics/0607196"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "afb61cb5-5811-4950-b093-355bca7e19cc",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}