Wall-loss distribution of charge breeding ions in an electron cyclotron resonance ion source

We investigated the ion-loss distribution on the sidewall of an electron cyclotron resonance (ECR) plasma chamber using the 18-GHz ECR charge breeder at the Tokai Radioactive Ion Accelerator Complex (TRIAC). Similarities and differences between the ion-loss distributions (longitudinal and azimuthal)...

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Bibliographic Details
Published in:Review of scientific instruments 2012-02, Vol.83 (2), p.02A910-02A910-3
Main Authors: Jeong, S. C., Oyaizu, M., Imai, N., Hirayama, Y., Ishiyama, H., Miyatake, H., Niki, K., Okada, M., Watanabe, Y. X., Otokawa, Y., Osa, A., Ichikawa, S.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACCELERATORS
Analogies
BREEDING
Chambers
Charge
ECR ION SOURCES
ELECTRON CYCLOTRON-RESONANCE
GHZ RANGE
INDIUM 111
INDIUM IONS
Ion accelerators
Ion sources
PARTICLE ACCELERATORS
PLASMA
RADIOACTIVE ION BEAMS
WALL EFFECTS
Walls
XENON 140
XENON IONS
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Summary:We investigated the ion-loss distribution on the sidewall of an electron cyclotron resonance (ECR) plasma chamber using the 18-GHz ECR charge breeder at the Tokai Radioactive Ion Accelerator Complex (TRIAC). Similarities and differences between the ion-loss distributions (longitudinal and azimuthal) of different ion species (i.e., radioactive 111 In 1+ and 140 Xe 1+ ions that are typical volatile and nonvolatile elements) was qualitatively discussed to understand the element dependence of the charge breeding efficiency. Especially, the similarities represent universal ion loss characteristics in an ECR charge breeder, which are different from the loss patterns of electrons on the ECRIS wall.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.3670740