Electron density measurement of cesium seeded negative ion source by surface wave probe

Journal Article · Wed Feb 15 00:00:00 EST 2012 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3671745· OSTI ID:22066291

Kisaki, M; Tsumori, K; Nakano, H; Ikeda, K; Osakabe, M; Nagaoka, K; Shibuya, M; Sato, M; Sekiguchi, H; Komada, S; Kondo, T; Hayashi, H; Asano, E; Takeiri, Y; Kaneko, O ^[1]

---

1. National Institute for Fusion Science, Toki 509-5292 (Japan)

Electron density measurements of a large-scaled negative ion source were carried out with a surface wave probe. By comparison of the electron densities determined with the surface wave probe and a Langmuir probe, it was confirmed that the surface wave probe is highly available for diagnostic of the electron density in H{sup -} ion sources. In addition, it was found that the ratio of the electron density to the H{sup -} ion density dramatically decreases with increase of a bias voltage and the H{sup -} ions become dominant negative particles at the bias voltage of more than 6 V.

• OSTI ID: 22066291
• Journal Information: Review of Scientific Instruments, Vol. 83, Issue 2; Conference: ICIS 2011: 14. international conference on ion sources, Giardini-Naxos, Sicily (Italy), 12-16 Sep 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CESIUM
COMPARATIVE EVALUATIONS
ELECTRON DENSITY
HYDROGEN IONS 1 MINUS
ION DENSITY
ION SOURCES
LANGMUIR PROBE
PLASMA SURFACE WAVES
WAVE PROPAGATION