| Автор | N.T. Lam |
| Автор | J.E. Scharer |
| Автор | R.S. Sund |
| Дата выпуска | 1994-08-01 |
| dc.description | Fast magnetosonic wave absorption by fast alpha particles at small concentrations during an approach to ignition in ITER-like fusion plasmas is examined for the fundamental deuterium heating scheme. Numerical results are obtained using a full-wave code which solves coupled second order differential equations for the wave fields in a slab geometry. The fast alpha particle velocity distribution is approximated by a Maxwellian, chosen so that its velocity space density of resonant particles equals that of a slowing down distribution when both are evaluated at the absorption peak. For the cases considered, the thermal gyroradius of the Maxwellian alpha distribution satisfies the condition (k<sub>⊥</sub>ρ<sub>αf</sub>)<sup>2</sup>/2 < 1. Significant absorption of the fast wave by the alphas can occur in a parameter window characteristic of startup conditions. This is because the Doppler broadened alpha particle resonance zone encompasses the deuterium-tritium hybrid resonance where the left hand circularly polarized component of the wave electric field peaks |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | Influence of alpha particle absorption on fundamental deuterium heating in a fusion plasma |
| Тип | paper |
| DOI | 10.1088/0029-5515/34/8/I08 |
| Electronic ISSN | 1741-4326 |
| Print ISSN | 0029-5515 |
| Журнал | Nuclear Fusion |
| Том | 34 |
| Первая страница | 1161 |
| Последняя страница | 1167 |
| Аффилиация | N.T. Lam; Dept. of Elect. & Comput. Eng., Wisconsin Univ., Madison, WI, USA |
| Аффилиация | J.E. Scharer; Dept. of Elect. & Comput. Eng., Wisconsin Univ., Madison, WI, USA |
| Аффилиация | R.S. Sund; Dept. of Elect. & Comput. Eng., Wisconsin Univ., Madison, WI, USA |
| Выпуск | 8 |
