{
  "annotation_id": "fdfff8fc-ec68-42a0-b521-f13c044c14bc",
  "date_created": "2026-03-02T18:00:53.771000Z",
  "date_modified": "2026-03-02T18:00:53.771000Z",
  "file_hash": "c636b19766642574030e047a208f7e93d22643a76940eb01dea1aa7b8250e162",
  "private": false,
  "record": {
    "abstract": "A high-beta, supersonic plasma flow plays a crucial role in MHD phenomena in\nspace and fusion plasmas. There are a few experimental researches on production\nand control of a fast flowing plasma in spite of a growing significance in the\nmagnetized-plasma flow dynamics. A magneto-plasma-dynamic arcjet (MPDA) is one\nof promising devices to produce a supersonic plasma flow and has been utilized\nas an electric propulsion device with a higher specific impulse and a\nrelatively larger thrust. We have improved the performance of an MPDA to\nproduce a quasi-steady plasma flow with a transonic and supersonic Mach number\nin a highly-ionized state. There are two methods in order to control an\nion-acoustic Mach number of the plasma flow exhausted from an MPDA: one is to\nuse a magnetic Laval nozzle to convert a thermal energy to a flow energy and\nthe other is a combined system of an ion heating and a divergent magnetic\nnozzle. The former is an analogous method to a compressible air flow and the\nlatter is the method proposed in an advanced thruster for a manned\ninterplanetary space mission. We have clarified the plasma flow characteristics\nin various shapes of a magnetic field configuration. It was demonstrated that\nthe Mach number of the plasma flow could increase up to almost 3 in a divergent\nmagnetic nozzle field. This paper reports recent results on the flow field\nimprovements: one is on a magnetic-Laval-nozzle effects observed at the muzzle\nregion of the MPDA, and the other is on ICRF (ion-cyclotron-range of frequency)\nheating of a supersonic plasma by use of a helical antenna.",
    "arxiv_id": "physics/0410205",
    "authors": [
      "M. Inutake",
      "A. Ando",
      "K. Hattori",
      "H. Tobari",
      "Y. Hosokawa",
      "R. Sato",
      "M. Hatanaka",
      "K. Harata"
    ],
    "categories": [
      "physics.plasm-ph"
    ],
    "title": "Development of supersonic plasma flows by use of a magnetic nozzle and   an ICRF heating",
    "url": "https://arxiv.org/abs/physics/0410205"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "de4c26ff-efde-4895-bcf6-2fa39a624b6d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}