Enhancement of Arc Ignition on Tungsten in Helium Plasmas with Impurity Gases

被引：0
|
作者：
Zhang R. [1 ]
Kajita S. [2 ]
Hwangbo D. [3 ]
Tanaka H. [1 ]
Ohno N. [1 ]
机构：
[1] Graduate School of Engineering, Nagoya University, Nagoya
[2] Institute of Materials and Sustainable Systems, Nagoya University, Nagoya
[3] Faculty of Pure and Applied Sciences, University of Tsukuba, 305-8577, Ibaraki
来源：
Plasma and Fusion Research | 2021年 / 16卷
基金：
日本学术振兴会;
关键词：
fuzz; impurity seeding; nano-tendril bundles; tungsten; unipolar arc;
D O I：
10.1585/PFR.16.2405069
中图分类号：
学科分类号：
摘要：
Arcing was ignited on deformed tungsten (W) surfaces, where W fuzz and/or nano-tendril bundles (NTBs) were grown, by steady state helium (He) plasma exposures with impurity gas seeding. At the same sample potential of −250 V, the presence of NTBs enhanced the frequency of arc ignition, whereas no arc ignition appeared on typical fuzz surfaces without NTBs. After a series of arc ignitions on a sample surface with NTBs, the aspect ratio of NTBs decreased, indicating that protruded NTBs with larger aspect ratio tend to trigger arcing easily. © 2021. The Japan Society of Plasma Science and Nuclear Fusion Research.
引用
收藏
页码：1 / 5
页数：4
相关论文
共 50 条
  • [31] Mach numbers for gases and plasmas in a convergent-divergent cascaded arc
    Burm, KTAL
    Goedheer, WJ
    Schram, DC
    PHYSICS OF PLASMAS, 1999, 6 (06) : 2628 - 2635
  • [32] PC-BASED ARC IGNITION AND ARC LENGTH CONTROL-SYSTEM FOR GAS TUNGSTEN ARC-WELDING
    LIU, YZ
    COOK, GE
    BARNETT, RJ
    SPRINGFIELD, JF
    IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, 1992, 28 (05) : 1160 - 1165
  • [33] EFFECTS OF GASES ON FORMATION OF PORES IN ARGON TUNGSTEN ARC WELDS IN NICKEL
    KRIVOSHEYA, VE
    AUTOMATIC WELDING USSR, 1968, 21 (04): : 13 - +
  • [34] ENHANCEMENT BY INERT GASES OF FIELD DESORPTION OF OXYGEN FROM TUNGSTEN
    BASSETT, DW
    BRITISH JOURNAL OF APPLIED PHYSICS, 1967, 18 (12): : 1753 - &
  • [35] Growth of nano-tendril bundles on tungsten with impurity-rich He plasmas
    Hwangbo, Dogyun
    Kajita, Shin
    Ohno, Noriyasu
    McCarthy, Patrick
    Bradley, James W.
    Tanaka, Hirohiko
    NUCLEAR FUSION, 2018, 58 (09)
  • [36] Unipolar arc plasmas on nanostructured tungsten surfaces under perpendicular magnetic field
    Hwangbo, Dogyun
    Nishijima, Daisuke
    Kajita, Shin
    Doerner, Russell P.
    Ohno, Noriyasu
    PLASMA SOURCES SCIENCE & TECHNOLOGY, 2020, 29 (12):
  • [37] Simulation study of sputtering erosion and impurity deposition, on carbon and tungsten surfaces irradiated with deuterium plasmas including carbon impurity
    Mitani, T
    Kawakami, R
    Kuriu, S
    JOURNAL OF NUCLEAR MATERIALS, 2004, 329 : 830 - 835
  • [38] Effective Electrode Work Functions in Helium Gas Tungsten Arc During Operation
    Tashiro, Shinichi
    Nishikawa, Hiroshi
    Tanaka, Manabu
    PLASMA PROCESSES AND POLYMERS, 2007, 4 : S995 - S998
  • [39] Helium and carbon isotopes in submarine gases from the Aeolian arc (Southern Italy)
    Inguaggiato, S
    Italiano, F
    WATER-ROCK INTERACTION, 1998, : 727 - 730
  • [40] Divertor detachment operation in helium plasmas with ITER-like tungsten divertor in EAST
    Liu, Jianbin
    Meng, Lingyi
    Guo, Houyang
    Li, Kedong
    Xu, Jichan
    Wang, Huiqian
    Xu, Guosheng
    Ding, Fang
    Zhang, Ling
    Duan, Yanmin
    Zhang, Bin
    Yu, Lin
    Wang, Ping
    Li, Ang
    Wu, Donggui
    Ding, Rui
    Wang, Liang
    PLASMA SCIENCE & TECHNOLOGY, 2022, 24 (07)
12345