TY - JOUR
T1 - Numerical analysis of isotope effect in NIFS negative ion source
AU - Kato, Ryo
AU - Hoshino, Kazuo
AU - Nakano, Haruhisa
AU - Shibata, Takanori
AU - Miyamoto, Kenji
AU - Iwanaka, Kengo
AU - Hayashi, Katsuya
AU - Hatayama, Akiyoshi
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2022/4/25
Y1 - 2022/4/25
N2 - Result of hydrogen (H) and deuterium (D) experiments done by NIFS research and development negative ion source (RNIS) demonstrated that the co-extracted electron current with the negative ions and the electron density in the driver region in the D experiment have been around three times higher than that in the H experiment. To investigate mechanism of this difference, electron transport simulation using 3D kinetic particle tracking model KEIO-MARC code has been modified and applied to analysis of the isotope effect in the NIFS negative ion source. Simulation result suggests that impacts of isotope effects of sheath potential drop, coulomb collisions, and some reactions of ground state molecules and ions on the electron density is not large to explain the experimental result of the increase in the electron density in the plasma.
AB - Result of hydrogen (H) and deuterium (D) experiments done by NIFS research and development negative ion source (RNIS) demonstrated that the co-extracted electron current with the negative ions and the electron density in the driver region in the D experiment have been around three times higher than that in the H experiment. To investigate mechanism of this difference, electron transport simulation using 3D kinetic particle tracking model KEIO-MARC code has been modified and applied to analysis of the isotope effect in the NIFS negative ion source. Simulation result suggests that impacts of isotope effects of sheath potential drop, coulomb collisions, and some reactions of ground state molecules and ions on the electron density is not large to explain the experimental result of the increase in the electron density in the plasma.
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U2 - 10.1088/1742-6596/2244/1/012035
DO - 10.1088/1742-6596/2244/1/012035
M3 - Conference article
AN - SCOPUS:85129907854
SN - 1742-6588
VL - 2244
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012035
T2 - 19th International Conference on Ion Sources, ICIS 2021
Y2 - 20 September 2021 through 24 September 2021
ER -