Sep 20 – 24, 2021
America/Vancouver timezone

Probe Measurement of an ECR Hydrogen Plasma Facing the C12A7 Electride Surface

Not scheduled
20m
Poster Negative ion sources Poster Session 2

Speaker

Keita Bito (Doshisha University)

Description

Plasma parameters of an ECR (electron cyclotron resonance) discharge excited in a compact (5 cm diameter, 3.3 cm long inner volume) ion source with the replaceable plasma electrode (PE) were measured with a Langmuir probe. A plasma electrode (PE) made of a C12A7 “electride” constituted with $^{12}$Ca$^{O}$ and 7Al2O3 supplied by AGC Inc., was installed to investigate how the electride PE changes the plasma parameters from those with Mo PE. The effect upon the plasma parameters in front of the PE due to the material will be elucidated by changing the probe position radially from the ion source center axis above the extraction hole to the periphery, and axially along the beam extraction direction.

E-mail for contact person ctwf0303@mail4.doshisha.ac.jp

Primary author

Keita Bito (Doshisha University)

Co-authors

Mamiko Sasao (Doshisha University) Motoi Wada (Doshisha University) Katsuyoshi Tsumori (National Institute of Fusion Science, SOKENDAI (The Graduate University for Advanced Students)) Nakano Haruhisa (National Institute of Fusion Science, SOKENDAI (The Graduate University for Advanced Students))

Presentation materials