| Автор | Ramalingam, H. B. |
| Автор | Selvarajan, V. |
| Дата выпуска | 1999 |
| dc.description | A magnetoelectrostatic trap consists of a spindle cusp magnetic field configuration and transverse electrostatic potentials applied to the electrodes at the ring and point cusp ends. Plasma confinement studies in this trap is made with a single positive charged particle. When the plasma is injected in such a system a potential well for the positive ions is formed where they could be trapped. Three-dimensional trajectory of the particle was developed by a single-gap mathematical model. The trajectory of a positive ion in the system was analyzed numerically by Runge-Kutta fourth order method. The equations of motion were constructed from the Hamiltonian function. The three-dimensional trajectory of an ion was traced for various possible input parameters. When the electrostatic potential and angle of injection are kept zero almost all the injected ions (post-cusp region) escape through the aperture. But there exists a critical injection velocity and magnetic field intensity to reflect the particle at axial cusp region. In this forward and backward motion the particle moves in a helical path encircling about the same magnetic lines of force. While introducing some potential difference to the electrodes in the cusp ends, the particle exhibits a "double helix" trajectory about the axis of the spindle cusp configuration. This double helical path leads long duration confinement of the particle in such a system and obviously cusp losses are suppressed. The results are reported for a wide range of input parameters. |
| Формат | application.pdf |
| Издатель | EDP Sciences |
| Копирайт | © EDP Sciences, 1999 |
| Название | Numerical studies on a positive ion trajectory in a magnetoelectrostatic trap for plasma confinement |
| Тип | research-article |
| DOI | 10.1051/epjap:1999201 |
| Electronic ISSN | 1286-0050 |
| Print ISSN | 1286-0042 |
| Журнал | The European Physical Journal Applied Physics |
| Том | 7 |
| Первая страница | 79 |
| Последняя страница | 85 |
| Аффилиация | Ramalingam H. B.; Department of Physics, Bharathiar University, Tamil Nadu, Coimbatore 641 046, India |
| Аффилиация | Selvarajan V.; Department of Physics, Bharathiar University, Tamil Nadu, Coimbatore 641 046, India |
| Выпуск | 1 |
