{
  "annotation_id": "eaf68662-28c1-45ee-a39c-f16b38a456bb",
  "date_created": "2026-03-02T18:00:53.733000Z",
  "date_modified": "2026-03-02T18:00:53.733000Z",
  "file_hash": "02f40d5e03da104022732692a03c86bf762a79582525f81506bb2c3977273a4c",
  "private": false,
  "record": {
    "abstract": "The tandem mirror GAMMA 10 utilizes an electron cyclotron resonance heating\n(ECRH) for forming a confinement potential. Density fluctuation is observed\nusing microwaves, such as interferometer, reflectometry and Fraunhofer\ndiffraction (FD) method. An ultrashort-pulse reflectometry has an advantage of\ndetecting fluctuation locally. The wave number can be obtained by the FD\nmethod. In the edge plasma region electrostatic probes are used. Fluctuation\nwith coherent mode in several kHz is excited in the hot-ion mode plasma. When\nthe ECRH is applied, electron density in the central cell increases gradually.\nOn the contrary, intensity of the density fluctuation decreases and coherent\nmode is suppressed. Its frequency also varies with the density increase. In\nthat time, radial potential distribution, i.e., electric field, changes along\nwith the formation of plug potential. From this behaviour it is deduced that\nthe fluctuation deeply relates to the potential formation and improvement of\nthe confinement.",
    "arxiv_id": "physics/0410224",
    "authors": [
      "A. Itakura",
      "S. Tsunoda",
      "M. Fukuhara",
      "H. Higaki",
      "H. Hojo",
      "M. Ichimura",
      "K. Ishii",
      "Y. Shima",
      "H. Takiue",
      "M. Yoshikawa",
      "T. Cho"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "title": "Density fluctuations in the tendem mirror Gamma 10",
    "url": "https://arxiv.org/abs/physics/0410224"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c538359e-0376-45e6-b874-e8c907cb118f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}