Автор |
K Kodera |
Автор |
Jen-Shih Chang |
Дата выпуска |
1976-11-11 |
dc.description |
An exact numerical method has been used to study a probe stagnation point in a continuum flowing plasma. The solutions for the 'low-density continuum' plasma, i.e. with mean free path<<probe radius<<Debye length are calculated for Reynolds numbers Re from 0 to 400, charged diffusion Reynolds numbers Ra<sub>c</sub> from 0 to 10, and scaled probe potentials phi <sub>p</sub>/ epsilon from 0 to +or-32, where phi <sub>p</sub>=eV<sub>p</sub>/kT<sub>e</sub>, epsilon =T/T<sub>e</sub>. The numerical results show that (i) the usual semi-log method for temperature determination leads to large errors; (ii) the effect of flow leads to large errors in the space potential determination; (iii) for a sufficiently large accelerating potential, the currents always show a linear dependence; (iv) approximate current expressions are suggested at smaller Reynolds numbers (Re<or=0.1) and diffusion Reynolds numbers (Ra<sub>c</sub><or=1). |
Формат |
application.pdf |
Издатель |
Institute of Physics Publishing |
Название |
Theory of electrostatic probes in a low-density flowing continuum plasma: numerical solutions for a sphere stagnation point |
Тип |
paper |
DOI |
10.1088/0022-3727/9/16/006 |
Electronic ISSN |
1361-6463 |
Print ISSN |
0022-3727 |
Журнал |
Journal of Physics D: Applied Physics |
Том |
9 |
Первая страница |
2349 |
Последняя страница |
2358 |
Аффилиация |
K Kodera; Centre de Recherches en Phys. de l'Environnement, Orlean-La Source, France |
Аффилиация |
Jen-Shih Chang; Centre de Recherches en Phys. de l'Environnement, Orlean-La Source, France |
Выпуск |
16 |