| Autor: |
Lau YY; Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109-2104, USA., Luginsland JW, Cartwright KL, Haworth MD |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2007 Jan 05; Vol. 98 (1), pp. 015002. Date of Electronic Publication: 2007 Jan 05. |
| DOI: |
10.1103/PhysRevLett.98.015002 |
| Abstrakt: |
The effect of ions in a magnetically insulated crossed-field gap is studied using a single particle orbit model, shear flow model, and particle-in-cell simulation. It is found that, in general, the presence of ions in a crossed-field gap always increases the electrons' excursion toward the anode region, regardless of the location of the ions. Thus, the rate at which the electrons migrate toward the anode, which is a measure of the diode closure rate, is related to the rate at which ions are introduced into the crossed-field gap. This anode migration of electrons is unrelated to crossed-field ambipolar diffusion. The implications of these findings are explored, such as pulse shortening in relativistic magnetrons and bipolar flows in pulsed-power systems. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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