Simulation studies of acceleration of heavy ions and their elemental compositions; IFSR--755

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By using a one-dimensional, electromagnetic particle simulation code with full ion and electron dynamics, we have studied the acceleration of heavy ions by a nonlinear magnetosonic wave in a multi-ion-species plasma. First, we describe the mechanism of heavy ion acceleration by magnetosonic waves. We then investigate this by particle simulations. The simulation plasma contains four ion species: H, He, O, and Fe. The number density of He is taken to be 10% of that of H, and those of O and Fe are much lower. Simulations confirm that, as in a single-ion-species plasma, some of the hydrogens can be accelerated ... continued below

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22 p.

Creation Information

Toida, Mieko & Ohsawa, Yukiharu July 1, 1996.

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  • Toida, Mieko Nagoya Univ. (Japan). Department of Physics
  • Ohsawa, Yukiharu Univ. of Texas, Austin, TX (United States). Institute for Fusion Studies

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Description

By using a one-dimensional, electromagnetic particle simulation code with full ion and electron dynamics, we have studied the acceleration of heavy ions by a nonlinear magnetosonic wave in a multi-ion-species plasma. First, we describe the mechanism of heavy ion acceleration by magnetosonic waves. We then investigate this by particle simulations. The simulation plasma contains four ion species: H, He, O, and Fe. The number density of He is taken to be 10% of that of H, and those of O and Fe are much lower. Simulations confirm that, as in a single-ion-species plasma, some of the hydrogens can be accelerated by the longitudinal electric field formed in the wave. Furthermore, they show that magnetosonic waves can accelerate all the particles of all the heavy species (He, O, and Fe) by a different mechanism, i.e., by the transverse electric field. The maximum speeds of the heavy species are about the same, of the order of the wave propagation speed. These are in good agreement with theoretical prediction. These results indicate that, if high-energy ions are produced in the solar corona through these mechanisms, the elemental compositions of these heavy ions can be similar to that of the background plasma, i.e., the corona.

Physical Description

22 p.

Notes

INIS; OSTI as DE96012829

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  • Other Information: PBD: Jul 1996

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  • Other: DE96012829
  • Report No.: DOE/ER/54346--755
  • Report No.: IFSR--755
  • Grant Number: FG03-96ER54346
  • DOI: 10.2172/273776 | External Link
  • Office of Scientific & Technical Information Report Number: 273776
  • Archival Resource Key: ark:/67531/metadc669371

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  • July 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Aug. 10, 2016, 2:15 p.m.

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Toida, Mieko & Ohsawa, Yukiharu. Simulation studies of acceleration of heavy ions and their elemental compositions; IFSR--755, report, July 1, 1996; Austin, Texas. (digital.library.unt.edu/ark:/67531/metadc669371/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.