2002-03
AUTHORSA. A. Ivanov, I. V. Shikhovtsev, A. A. Podyminogin, I. I. Averboukh, T. D. Akhmetov, V. I. Davydenko, P. P. Deichuli
ABSTRACTAn injector of hydrogen atoms for plasma diagnostics in modern tokamaks has been developed at the Budker Institute of Nuclear Physics (Novosibirsk). The ion source of the injector produces a proton (helium ion) beam with a current of up to 2 A (1 A), an ion energy of up to 55 keV, a beam divergence of ∼0.6\deg, and a pulse duration of up to 10 s. An RF discharge-based plasma emitter, which is one of the main parts of the ion source, is described. The emitter diameter is 72 mm, the ion current density is 120 mA/cm2, and the inhomogeneity of the current density is ±6%. The beam is formed by a four-electrode ionoptical system with 163 round apertures. At a current of 2 A, the ion beam consists of 67% protons, 18% H2+ ions, and 15% H3+ ions, the total content of heavier ions in the beam being no higher than 2–3%. More... »
PAGES196-203
http://scigraph.springernature.com/pub.10.1134/1.1458986
DOIhttp://dx.doi.org/10.1134/1.1458986
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