Magnetic field structure influence on primary electron cusp losses for micro-scale discharges
| العنوان: | Magnetic field structure influence on primary electron cusp losses for micro-scale discharges |
|---|---|
| المؤلفون: | Ben Dankongkakul, Richard E. Wirz, Samuel J. Araki |
| المصدر: | Physics of Plasmas. 21:043506 |
| بيانات النشر: | AIP Publishing, 2014. |
| سنة النشر: | 2014 |
| مصطلحات موضوعية: | Physics, Cusp (singularity), Gyroradius, Monte Carlo method, Plasma diagnostics, Electron, Atomic physics, Condensed Matter Physics, Tracking (particle physics), Order of magnitude, Computational physics, Magnetic field |
| الوصف: | An experimental effort was used to examine the primary electron loss behavior for micro-scale (≲3 cm diameter) discharges. The experiment uses an electron flood gun source and an axially aligned arrangement of ring-cusps to guide the electrons to a downstream point cusp. Measurements of the electron current collected at the point cusp show an unexpectedly complex loss pattern with azimuthally periodic structures. Additionally, in contrast to conventional theory for cusp losses, the overall radii of the measured collection areas are over an order of magnitude larger than the electron gyroradius. Comparing these results to Monte Carlo particle tracking simulations and a simplified analytical analysis shows that azimuthal asymmetries of the magnetic field far upstream of the collection surface can substantially affect the electron loss structure and overall loss area. |
| تدمد: | 1089-7674 1070-664X |
| DOI: | 10.1063/1.4871724 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::1ddb0b4fcb4fda164ec0a7ab4b909af9 https://doi.org/10.1063/1.4871724 |
| رقم الانضمام: | edsair.doi...........1ddb0b4fcb4fda164ec0a7ab4b909af9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10897674 1070664X |
|---|---|
| DOI: | 10.1063/1.4871724 |