Modeling of a negative ion source. II. Plasma-gas coupling in the extraction region
نویسندگان
چکیده
منابع مشابه
Modeling of the negative ion extraction from a hydrogen plasma source. Application to ITER Neutral Beam Injector
The development of a high performance negative ion (NI) source constitutes a crucial step in the construction of Neutral Beam Injector of the future fusion reactor ITER. NI source should deliver 60 A of H (or 40 A D), which is a technical and scientific challenge, and requires a deep understanding of the underlying physics of the source including the role of the magnetic filter. The present kno...
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H ion was generated through two processes within a volume Csfree source. The density of molecule hydrogen gas will impact on the electron temperature within the primary discharge chamber that will influence the population of vibrational excited H2. Within the extraction region, the interaction between molecule hydrogen and H ion will is cause the dissociation of negative ion. To better understa...
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Pure volume production of D negative ions is studied in rectangular negative ion source equipped with an external magnetic filter (MF). Production and control of D2 plasma with the MF is nearly the same as that of H2 plasmas. Plasma parameters (ne and Te) in D2 plasmas are varied mainly in the downstream region by changing the magnetic field intensity of the MF (i.e., BMF), although the values ...
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چکیده ندارد.
15 صفحه اولUniform Negative Ion Beam Extraction in a Cesium-Seeded Large Negative Ion Source with a Tent Magnetic Filter
For improvement of spatial uniformity of negative ion beams, the external magnetic filter was replaced to a novel tent-shaped magnetic filter in the JAEA 10 ampere negative ion source. The tent filter geometry is based on new findings in surface production of negative ions in high electron temperature plasmas. In order to link the tent filter, the original line-cusp field configuration on the s...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2008
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.2985854