| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
Prev
Next
|
|
|
Modulation of absorption manner in helicon discharges by changing profile of low axial magnetic field |
| Gao Zhao(赵高)1, Yu Wang(王宇)1, Chen Niu(牛晨)2, Zhong-Wei Liu(刘忠伟)2, Jiting Ouyang(欧阳吉庭)1, Qiang Chen(陈强)2 |
1. School of Physics, Beijing Institute of Technology, Beijing 100081, China;
2. Laboratory of Plasma Physics & Materials, Beijing Institute of Graphic Communication, Beijing 102600, China |
|
|
|
|
Abstract The modulation of absorption manner in helicon discharge by changing the profile of low axial magnetic field is explored experimentally in this work. The experiments are carried out in Boswell-type antenna driven by 13.56-MHz power source in 0.35-Pa argon environment. The peak of the external non-uniform magnetic field (Bex) along the axis is observed in a range from 0 Gs to 250 Gs (1 Gs=10-4 T), where the electron density varies from 0.5×1016 m-3 to 9×1016 m-3. When Bex is located near the tube upper end sealed by a dielectric plate, or near the tube bottom end connected with a diffusion chamber, the plasmas are centralized in the tube in the former case while the strong luminance appears between the edge of the tube and the axial line in the latter case. When Bex is located in the middle of the antenna, moreover, an effective resistance (Reff) peak appears apparently with increasing magnetic field. The glow moves toward first the edge of the tube and then the two antenna legs as the magnetic field increases. The discharge in this case is caused by the absorption of Trivelpiece-Gould (TG) wave. It is suggested that Bex is located in the middle of the antenna to obtain a higher efficiency of power transfer.
|
Received: 05 May 2017
Revised: 15 June 2017
Accepted manuscript online:
|
|
PACS:
|
52.50.Qt
|
(Plasma heating by radio-frequency fields; ICR, ICP, helicons)
|
| |
52.40.Db
|
(Electromagnetic (nonlaser) radiation interactions with plasma)
|
|
| Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11175024, 11375031, and 11505013), the Beijing Natural Science Foundation of China (Grant No. KZ201510015014), and the Beijing Municipal Natural Science Foundation, China (Grant No. 4162024). |
Corresponding Authors:
Jiting Ouyang, Qiang Chen
E-mail: jtouyang@bit.edu.cn;lppmchenqiang@hotmail.com
|
Cite this article:
Gao Zhao(赵高), Yu Wang(王宇), Chen Niu(牛晨), Zhong-Wei Liu(刘忠伟), Jiting Ouyang(欧阳吉庭), Qiang Chen(陈强) Modulation of absorption manner in helicon discharges by changing profile of low axial magnetic field 2017 Chin. Phys. B 26 105201
|
| [1] |
Boswell R W 1970 Phys. Lett. A 33 457
|
| [2] |
Chen F F 2015 Plasma Sources Sci. Technol. 24 014001
|
| [3] |
Chen F F and Boswell R W 1997 IEEE Trans. Plasma Sci. 25 1245
|
| [4] |
Shamrai K P and Taranov V B 1996 Plasma Sources Sci. Technol. 5 474
|
| [5] |
Chen F F, Jiang X, Evans J D, Tynan G and Arnush D 1997 Plasma Phys. Contr. Fusion 39 A441
|
| [6] |
Lho T, Hershkowitz N, Miller J, Steer W and Kim G H 1998 Phys. Plasmas 5 3135
|
| [7] |
Wang S J, Kwak J G, Kim C B and Kim S K 2003 Phys. Lett. A 313 278
|
| [8] |
Lafleur T, Charles C, and Boswell R W 2010 Phys. Plasmas 17 073508
|
| [9] |
Degeling A W, Jung C O, Boswell R W and Elingobe A R 1996 Phys. Plasmas 3 2788
|
| [10] |
Chen F F 2003 Phys. Plasmas 10 2586
|
| [11] |
Cho S 2006 Phys. Plasmas 13 033504
|
| [12] |
Sato G, Oohara O and Hatakeyama R 2007 Plasma Source Sci. Technol. 16 734
|
| [13] |
Lafleur T, Charles C and Boswell R W 2011 Phys. Plasmas 18 043502
|
| [14] |
Barada K K, Chattopadhyay P K, Ghosh J, Kumar S and Saxena Y C 2013 Phys. Plasmas 20 042119
|
| [15] |
Barada K K, Chattopadhyay P K, Ghosh J, Kumar S and Saxena Y C 2013 Phys. Plasmas 20 012123
|
| [16] |
Wang Y, Zhao G, Liu Z W, Ouyang J T and Chen Q 2015 Phys. Plasmas 22 093507
|
| [17] |
Lafleur T, Charles C and Boswell R W 2010 Phys. Plasmas 17 043505
|
| [18] |
Charles C and Boswell R W 2004 Phys. Plasmas 11 1706
|
| [19] |
Charles C and Boswell R W 2007 Appl. Phys. Lett. 91 201505
|
| [20] |
Virko V F, Shamrai K P, Virko Y V and Kirichenko G S 2004 Phys. Plasmas 11 3888
|
| [21] |
Lafleur T, Charles C and Boswell R W 2011 J. Phys. D:Appl. Phys. 44 055202
|
| [22] |
Takahashi K, Motomura T, Ando A, Kasashima Y, Kikunaga K, Uesugi F and Hara S 2014 J. Phys. D:Appl. Phys. 47 425201
|
| [23] |
Takahashi K, Takayama S, Komuro A and Ando A 2016 Phys. Rev. Lett. 116 135001
|
| [24] |
Boswell R W 1970"A Study of Waves in Gaseous Plasmas", Ph D. Thesis (Flinders University)
|
| [25] |
Sun B, Huo W G and Ding Z F 2012 Rev. Sci. Instrum. 83 085112
|
| [26] |
Chen F F 1991 Plasma Phys. Control. Fusion 33 339
|
| [27] |
Ganguli A, Sahu B B and Tarey R D 2007 Phys. Plasmas (1994-present) 14 113503
|
| [28] |
Shamrai K P 1998 Plasma Sources Sci. Technol. 7 499
|
| [29] |
Boswell R W and Chen F F 1997 IEEE Trans. Plasma Sci. 25 1229
|
| [30] |
Kamenski I V and Borg G G 1996 Phys. Plasmas 3 4396
|
| [31] |
Chen F F 2013 Phys. Plasmas 20 057102
|
| [32] |
Chen F F 2012 Phys. Plasmas 19 093509
|
| [33] |
Chen F F 2007 Plasma Sources Sci. Technol. 16 593
|
| [34] |
Niu C, Zhao G, Wang Y, Liu Z W and Chen Q 2017 Phys. Plasmas 24 013518
|
| [35] |
Yang X, Cheng M S, Wang M G, et al. 2017 Acta Phys. Sin. 66 025201(in Chinese)
|
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
Altmetric
|
|
blogs
Facebook pages
Wikipedia page
Google+ users
|
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
View more on Altmetrics
|
|
|
