In order to study the binding effect of the magnetic field generated by the discharge current in the vacuum pulse dischargeon the generated plasma, we newly designed a cone-spiral electrode structure used for vacuum discharge. Moreover, we simulated the magnetic field distributions of the cone-tubular and cone-spiral electrodes by the Maxwell 3D simulation software,and discussed the impact of factors that affect the generation characteristics of vacuum-arc discharge plasmas such as the self-magnetic field inside electrodes, relative positions between the cathode and anode, and the inner diameter of the spiral anode. Meanwhile, we measured the parameters of the metal plasmas by using a Langmuir probe. The experimental and simulation results indicate that using the axial magnetic field generated by the current flowing through the spiral electrode can constrain some of the spread plasmas effectively and increase the plasma density measured by the probe. Suitable optimizing of the spiral anode can increase the magnetic field strength within the electrode and obtain metal plasmas of higher density from the axial direction of the spiral electrode.
KEY WORDS :vacuum;spiral electrode;metal plasma;probe method;pulse discharge;
[1]
YUSHKOV GY, VODOPYANOV AV, NIKOLAEV AG, et al.Gyrotron microwave heating of vacuum arc plasma for high-charge-state metal ion beam generation[J]. , 2013, 41(8): 2081-2086.
[2]
YUSHKOV GY, SAVKIN KP, NIKOLAEV AG.Formation of multicharged metal ions in vacuum arc plasma heated by Gyrotron radiation[J]. , 2011, 13(5): 596-599.
[3]
FIETZKEF, ZIMMERMANNB.Plasma characterization and technological application of a hollow cathode plasma source with an axial magnetic field[J]. , 2010, 8(33): 1491-1496.
[4]
杨乐,李自然,尹乐,等. 脉冲等离子体推力器研究综述[J]. ,2006,32(2):32-36.YANGLe, LIZiran, YINLe, et al.Review of pulsed plasma thruster[J]. , 2006, 32(2): 32-36.
[5]
柯建林,周长庚. 脉冲束流引出时的等离子体鞘层变化[J]. ,2015,27(8):259-263.KEJianlin, ZHOUChanggeng.Evolution of plasma sheath in pulsed ion beam extractions[J]. , 2015, 27(8): 259-263.
[6]
AOYAGIJ, MUKAIM.Total impulse improvement of coaxial pulsed plasma thruster for small satellite[J]. , 2008, 83(1): 72-76.
[7]
刘文正,孔飞,张德金. 真空脉冲放电金属等离子体生成及传播特性[J]. ,2012,24(2):491-496.LIUWenzheng, KONGFei, ZHANGDejin.Generation and propagation characteristics of vacuum pulse discharge metal plasma[J]. , 2012, 24( 2): 491-496.
[8]
操慧珺,楚豫川,曹勇,等. 离子推进器中离子束中和及推进过程的全粒子数值模拟[J]. ,2014,40(7):2119-2124.CAOHuijun, CHUYuchuan, CAOYong, et al.Full particle numerical simulations of ion beam neutralization and propagation process for ion thruster[J]. , 2014, 40(7): 2119-2124.
[9]
钟久明,刘树林,段江龙,等. 短间隙短路放电的场增强因子研究[J]. ,2015,35(9):1035-1040.ZHONGJiuming, LIUShulin, DUANJianglong, et al.Field enhancement factor in short-circuit discharge across narrow-gap[J]. , 2015, 35(9): 1035-1040.
[10]
ANDERSA.Discharge physics of high power impulse magnetron sputtering[J]. , 2010, 205(19): 1-9.
[11]
ANDERSA, YUSHKOVG, OKSE, et al.Ion charge state distributions of pulsed vacuum arc plasmas in strong magnetic fields[J]. , 2008, 69(3): 1332-1335.
[12]
FRANZR, POLCIKP, ANDERSA.Ion charge state distributions of Al and Cr in cathodic arc plasmas from composite cathodes in vacuum, Argon, Nitrogen, and Oxygen[J]. , 2013, 41(8): 1929-1937.
[13]
MI XZ.[M]. Beijing, China: China National Defense Industry Press, 2007.
[14]
LIU WZ, WANGH.Generation and propagation characteristics of vacuum discharge plasma with co-axial electrodes[J]. , 2013, 25(8): 2111-2116.
[15]
LIU WZ, WANGH, ZHANG DJ, et al.Study on the discharge characteristics of a coaxial pulsed plasma thruster[J]. , 2014, 16(4): 344-351.
[16]
王新新. X箍缩放电等离子体及其应用[J]. ,2012,38(7):1537-1547.WANGXinxin.X-pinch plasma and its applications[J]. , 2012, 38(7): 1537-1547.
[17]
LIU WZ, WANGH, ZHANG DJ.Impact of the electric field distribution on the generation characteristics of vacuum-arc discharge plasmas[J]. , 2013, 41(7): 1690-1695.
[18]
SOLOV'EV AA, SOCHUGOV NS, OSKOMOV KV, et al. Investigation of plasma characteristics in an unbalanced magnetron sputtering system[J]. , 2009, 35(5): 399-408
[19]
KELLY PJ, ARNELL RD.The determination of the current-voltage characteristics of a closed-field unbalanced magnetron sputtering system[J]. , 1998, 98(98): 1370-1376
[20]
丁健. 载流有限长密绕螺线管的磁场分布[J]. ,2009,28(8):28-30.DINGJian.Magnetic field distribution of carrying tightly wound solenoid with finite length[J]. , 2009, 28(8): 28-30.
[21]
HELMERSSONU, LATTEMANNM, BOHLMARKJ, et al.Ionized physical vapor deposition (IPVD): a review of technology and applications[J]. , 2006, 513(Supplement 1/2): 1-24.