Characterization of high flux magnetized helium plasma in SCU-PSI linear device

Xiaochun MA (马小春); Xiaogang CAO (曹小岗); Lei HAN (韩磊); Zhiyan ZHANG (张志艳); Jianjun WEI (韦建军); Fujun GOU (芶富均)

doi:10.1088/2058-6272/aa936e

Plasma Science and Technology > 2018 > 20(2): 25104-025104. > DOI: 10.1088/2058-6272/aa936e

Xiaochun MA (马小春), Xiaogang CAO (曹小岗), Lei HAN (韩磊), Zhiyan ZHANG (张志艳), Jianjun WEI (韦建军), Fujun GOU (芶富均). Characterization of high flux magnetized helium plasma in SCU-PSI linear device[J]. Plasma Science and Technology, 2018, 20(2): 25104-025104. DOI: 10.1088/2058-6272/aa936e

Citation:

PDF (898 KB)

Characterization of high flux magnetized helium plasma in SCU-PSI linear device

1 Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064, People’s Republic of China 2 Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610064, People’s Republic of China

Funds: This work is supported by International Thermonuclear Experimental Reactor (ITER) program special (Grant No. 2013GB114003) and National Natural Science Foundation of China (project approval Nos. 11275135, 11475122).

More Information

Received Date: June 29, 2017

Graphical Abstract

Abstract

Abstract

A high-flux linear plasma device in Sichuan University plasma-surface interaction (SCU-PSI) based on a cascaded arc source has been established to simulate the interactions between helium and hydrogen plasma with the plasma-facing components in fusion reactors. In this paper, the helium plasma has been characterized by a double-pin Langmuir probe. The results show that the stable helium plasma beam with a diameter of 26mm was constrained very well at a magnetic field strength of 0.3 T. The core density and ion flux of helium plasma have a strong dependence on the applied current, magnetic field strength and gas flow rate. It could reach an electron density of 1.2×10 ¹⁹ m ^-3 and helium ion flux of 3.2×10 ²² m ^-2 s ^-1, with a gas flow rate of 4 standard liter per minute, magnetic field strength of 0.2 T and input power of 11kW. With the addition of -80 V applied to the target to increase the helium ion energy and the exposure time of 2h, the flat top temperature reached about 530°C. The different sizes of nanostructured fuzz on irradiated tungsten and molybdenum samples surfaces under the bombardment of helium ions were observed by scanning electron microscopy. These results measured in the SCU-PSI linear device provide a reference for International Thermonuclear Experimental Reactor related PSI research.
- helium plasma,
- beam diameter,
- electron density,
- ion flux,
- nanostructure fuzz

FullText(HTML)

References (28)

References

[1]	Baldwin M J and Doerner R P 2008 Nucl. Fusion 48 035001
[2]	Matlock T S et al 2014 Plasma Sources Sci. Technol. 23 025014
[3]	Li Y G et al 2012 Commun. Comput. Phys. 11 1547
[4]	Federici G et al 1999 J. Nucl. Mater. 266–269 14
[5]	Shimada M et al 2009 J. Nucl. Mater. 390–391 282
[6]	Kajita S et al 2007 Nucl. Fusion 47 1358
[7]	van Rooij G J et al 2011 J. Nucl. Mater. 415 S137
[8]	Blackwell B D et al 2012 Plasma Sources Sci. Technol. 21 055033
[9]	Ezumi N et al 1999 J. Nucl. Mater. 266–269 337
[10]	Peerenboom K S C et al 2014 Plasma Sources Sci. Technol. 23 025003
[11]	van Eck H J N et al 2014 Fusion Eng. Des. 89 2150
[12]	van Rooij G J et al 2007 Appl. Phys. Lett. 90 121501
[13]	Scholten J et al 2013 Fusion Eng. Des. 88 1785
[14]	Westerhout J et al 2007 Phys. Scr. 128 18
[15]	De Temmerman G et al 2011 Nucl. Fusion 51 073008
[16]	Ohno N et al 2013 J. Nucl. Mater. 438 S879
[17]	Cao X et al 2014 Fusion Eng. Des. 89 2864
[18]	Cao X et al 2014 Fusion Eng. Des. 89 2919
[19]	Ou W et al 2016 Plasma Sci. Technol. 18 627
[20]	Tao W H and Yasuda H K 2002 Plasma Chem. Plasma Process. 22 313
[21]	Mendez-Martinez E F et al 2010 Plasma Sci. Technol. 12 314
[22]	Spitzer L 1962 Physics of Fully Ionized Gases (New York: Interscience Publishers)
[23]	Vijvers W A J et al 2008 Phys. Plasmas 15 093507
[24]	De Groot B et al 2007 Fusion Eng. Des. 82 1861
[25]	Westerhout J 2010 Carbon chemical erosion in high ?ux and low temperature hydrogen plasma PhD Technische Universiteit Eindhoven, Eindhoven, Netherlands
[26]	Kajita S et al 2009 Nucl. Fusion 49 095005
[27]	Fi?is P, Connolly N and Ruzic D N 2016 J. Nucl. Mater. 482 201
[28]	Tanyeli I et al 2015 Surface modi?cation of metals induced by high ?uxes of low energy helium ions Proc. 22nd Int. Symp. on Plasma Chemistry (Antwerp, Belgium) (ISPC)

[1]	Shuangyuan FENG, Shin KAJITA, Masayuki TOKITANI, Daisuke NAGATA, Noriyasu OHNO. Rapid growth of nanostructure on tungsten thin film by exposure to helium plasma[J]. Plasma Science and Technology, 2023, 25(4): 042001. DOI: 10.1088/2058-6272/ac9f2d
[2]	Hongyu FAN, Chunjie NIU, Xiaoping LI, Weifeng LIU, Yang ZHANG, Weiyuan NI, Yinghui ZHANG, Lu LIU, Dongping LIU, Günther BENSTETTER, Guangjiu LEI, Jinhai NIU. W fuzz layers: very high resistance to sputtering under fusion-relevant He⁺ irradiations[J]. Plasma Science and Technology, 2022, 24(1): 015601. DOI: 10.1088/2058-6272/ac35a2
[3]	Ming ZENG (曾明), Ovidiu TESILEANU. High-flux electron beams from laser wakefield accelerators driven by petawatt lasers[J]. Plasma Science and Technology, 2017, 19(7): 70502-070502. DOI: 10.1088/2058-6272/aa6437
[4]	WEI Zian (卫子安), MA Jinxiu (马锦秀), LI Yuanrui (李元瑞), SUN Yan (孙彦), JIANG Zhengqi (江正琦). Control of Beam Energy and Flux Ratio in an Ion-Beam-Background Plasma System Produced in a Double Plasma Device[J]. Plasma Science and Technology, 2016, 18(11): 1076-1080. DOI: 10.1088/1009-0630/18/11/04
[5]	ZHOU Qiujiao (周秋娇), QI Bing (齐冰), HUANG Jianjun (黄建军), PAN Lizhu (潘丽竹), LIU Ying (刘英). Measurement of Electron Density and Ion Collision Frequency with Dual Assisted Grounded Electrode DBD in Atmospheric Pressure Helium Plasma Jet[J]. Plasma Science and Technology, 2016, 18(4): 400-405. DOI: 10.1088/1009-0630/18/4/12
[6]	WANG Qing(王庆), BA Dechun(巴德纯), MING Yue(明悦), XU Lin(徐林), GUO Deyu(郭德宇). Low Temperature Nitriding of 304 Austenitic Stainless Steel Using RF-ICP Method: the Role of Ion Beam Flux Density[J]. Plasma Science and Technology, 2014, 16(10): 960-963. DOI: 10.1088/1009-0630/16/10/10
[7]	TAO Ling(陶玲), HU Chundong(胡纯栋), XIE Yuanlai(谢远来). Numerical Simulation of Subcooled Boiling Inside High-Heat-Flux Component with Swirl Tube in Neutral Beam Injection System[J]. Plasma Science and Technology, 2014, 16(5): 512-520. DOI: 10.1088/1009-0630/16/5/12
[8]	Takanori MIYAMOTO, Shuichi TAKAMURA, Hiroaki KURISHITA. Recovery of Tungsten Surface with Fiber-Form Nanostructure by Plasmas Exposures[J]. Plasma Science and Technology, 2013, 15(2): 161-165. DOI: 10.1088/1009-0630/15/2/17
[9]	Takashi MAEKAWA, Tomokazu YOSHINAGA, Hitoshi TANAKA, Masaki UCHIDA, Fumitake WATANABE. Study of Electron Orbits for Formation of Toroidal Closed Flux Surface by ECH[J]. Plasma Science and Technology, 2011, 13(3): 342-346.
[10]	ZHU Xueguang(朱学光). Influence of the Phase of the Antenna Current Standing Wave on the Power Flux in Ion Cyclotron Heating[J]. Plasma Science and Technology, 2010, 12(5): 543-546.