{
  "annotation_id": "01d4f2e7-67a8-4288-baab-66128ac781e4",
  "date_created": "2026-02-17T05:53:12.434000Z",
  "date_modified": "2026-02-17T05:53:12.434000Z",
  "file_hash": "4acc37977a2bc8267908ff101668c548162499af69216491b4c674287ce7ba0e",
  "private": false,
  "record": {
    "abstract": "The guiding-center dynamics of charged particles moving in a doubly-symmetric screw-pinch magnetic field is investigated. In particular, we verify that Kruskal\u0027s adiabatic-invariant series expansion of the radial action integral associated with the reduced full-orbit radial motion matches the perturbation expansion of the magnetic-moment gyroaction up to first order in magnetic-field non-uniformity. Because the radial action integral is an exact invariant of the full-orbit dynamics, the magnetic moment is therefore represented as non-perturbative integral expression, which can be used to test the validity of the guiding-center approximation.",
    "arxiv_id": "2601.07109",
    "authors": [
      "Alain J. Brizard"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "title": "Guiding-center dynamics in a screw-pinch magnetic field",
    "url": "https://arxiv.org/abs/2601.07109",
    "version": "v1"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "55b89c31-7f4a-4460-8378-ab84c52ea382",
    "id": "arXiv Dataset",
    "type": "Model",
    "variant": "snapshot-2026-01-17",
    "version": "0.1.0"
  },
  "user_id": 1000002
}