{
  "annotation_id": "e0d6d5ca-a426-4364-9edd-2af418272f8b",
  "date_created": "2026-03-02T18:00:53.425000Z",
  "date_modified": "2026-03-02T18:00:53.425000Z",
  "file_hash": "4a548b0b5c0b0275520e2ef7b93f4709c472e7406caf158007bbc1699a562943",
  "private": false,
  "record": {
    "abstract": "Two-fluid flowing equilibrium configurations of a helicity-driven spherical\ntorus (HD-ST) are numerically determined by using the combination of the finite\ndifference and the boundary element methods. It is found from the numerical\nresults that electron fluids near the central conductor are tied to an external\ntoroidal field and ion fluids are not. The magnetic configurations change from\nthe high-$q$ HD-ST ($q$\u003e1) with paramagnetic toroidal field and low-$\\beta$\n(volume average $\\beta$ value, ($\u003c\\beta\u003e\\approx$ 2 %) through the\nhelicity-driven spheromak and RFP to the ultra low-$q$ HD-ST (0\u003cq\u003c1) with\ndiagmagnetic toroidal field and high-$\\beta$ ($\\beta\\approx 18\\%) as the\nexternal toroidal field at the inner edge region decreases and reverses the\nsign. The two-fluid effecs are more significant in this equilibrium transition\nwhen the ion diagmagnetic drift is dominant in the flowing two-fluid.",
    "arxiv_id": "physics/0410111",
    "authors": [
      "T. Kanki",
      "M. Nagata",
      "T. Uyama"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "doi": "10.1541/ieejfms.125.962",
    "title": "Numerical Study of Two-fluid Flowing Equilibria of Helicity-driven   Spherical Torus Plasmas",
    "url": "https://arxiv.org/abs/physics/0410111"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "37d6f82c-d0f6-481b-9fdb-90c1ab31afcf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}