Development of in situ energetic ion injector for magnetically confined plasmas using hydrogen storage electrode

A Okamoto; T Oku; S Koike; Y Sato; K Ishii; S Kitajima

doi:10.1063/1.4825162

Development of in situ energetic ion injector for magnetically confined plasmas using hydrogen storage electrode

Rev Sci Instrum. 2014 Feb;85(2):02B302. doi: 10.1063/1.4825162.

Authors

A Okamoto¹, T Oku¹, S Koike¹, Y Sato¹, K Ishii¹, S Kitajima¹

Affiliation

¹ Department of Quantum Science and Energy Engineering, Tohoku University, Sendai 980-8579, Japan.

PMID: 24593579
DOI: 10.1063/1.4825162

Abstract

To develop a compact ion injector made of hydrogen storage material, we investigate a plasma response for a positively biased hydrogen storage electrode in a small standard heliac device. When the bias voltage of the electrode increases, a positive potential between the electrode and the space potential on the magnetic surface emerges. The emission of hydrogen atom line also increases. To clarify the origin of the increase in emission, we designed an imaging system with sufficient temporal resolution.