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1.
1. S. E. Oltean and M. Abrudean, Journal of Control Engineering and Applied Informatics 10(1), 40 (2008).
2.
2. K. Olszewska and K. Friedel, Vacuum 74, 29 (2004).
http://dx.doi.org/10.1016/j.vacuum.2003.11.004
3.
3. O. Mauer, Germany patent 119363 (20 April 1976).
4.
4. S. Hiramoto, M. Ohmine, and M. Sakamoto, Weld. Int. 10, 763 (1991).
http://dx.doi.org/10.1080/09507119109447844
5.
5. V. Ya. Braverman, D. A. Skurikhin, S. G. Bayakin, V. F. Shabanov, and V. V. Bashenko, Svarochnoe Proizvodstvo 1, 16 (1997).
6.
6. V. A. Vinogradov, Weld. Int. 8, 488 (1994).
http://dx.doi.org/10.1080/09507119409548634
7.
7. V. Ya. Belen'kii and V. M. Yazovskikh, Weld. Int. 11, 554 (1997).
http://dx.doi.org/10.1080/09507119709452013
8.
8. G. I. Leskov, V. M. Nesterenkov, and L. I. Jivaga, Aumat. welding 12, 34 (1982).
9.
9. G. Mladenov, G. Grigorov, and T. Tanev, Bulgarian patent 35924, 60014/1983 (7 March 1983).
10.
10. B. Ya. Belen'kii, Svar. Proizvod. 8, 6 (1979).
11.
11. V. O. Tokarev, O. E. Ostrovskii, V. A. Kazakov, and I. V. Alekseev, Welding Int. 9, 987 (1995).
http://dx.doi.org/10.1080/09507119509548934
12.
12. K. Olszewska, A. Czopik, and W. Sielanko, in Electron Beam Technologies 1997, Proceedings of the Fifth international conference on electron beam technologies, Varna, Bulgaria, 2-5 June 1997 (IE BAS, Sofia, 1997), pp.149154.
13.
13. V. M. Yazovskikh, D. N. Trushnikov, V. Ya. Belenkiy, and L. N. Krotov, Weld. Int. 18(9), 724 (2004).
http://dx.doi.org/10.1533/wint.2004.3356
14.
14. D. N. Trushnikov, V. M. Yazovskikh, and V. Ya. Belenkiy, Weld. Int. 21(5), 384 (2007).
http://dx.doi.org/10.1080/09507110701444826
15.
15. D. N. Trushnikov, V. Ya. Belenkiy, G. M. Mladenov, and N. S. Portnov, Materialwissenschaft und Werkstofftechnik 43(10), 892 (2012).
http://dx.doi.org/10.1002/mawe.201200933
16.
16. Y. Peng, W. Chen, C. Wang, G. Bao, and Z. Tian, J Phys D: Appl Phys 34(21), 3145 (2001).
http://dx.doi.org/10.1088/0022-3727/34/21/307
17.
17. S. Teresa, A. Antonio, R. Domenico, L. Valentina, T. Luigi, and M. Pietro, Sensors 10(4) 3549 (2010).
http://dx.doi.org/10.3390/s100403549
18.
18. W. Teng, G. Xiangdong, S. Katayama, and J. Xiaoli, Plasma Science and Technology 14(3), 245 (2012).
http://dx.doi.org/10.1088/1009-0630/14/3/11
19.
19. A. Czopik, Weld. Int. 27(4), 259 (2013).
http://dx.doi.org/10.1080/09507116.2011.600034
20.
20. Stanley G. Best, U. S. Patent 3,588,463 (June 2 1971).
21.
21. C. Batulescu, D. Popesku, M. Andries, and M. Toma, Proceedings of the Fifth international conference on electron beam technologies (IE BAS, Sofia, 1997), 143.
22.
22. N. Postaciouglu, P. Capadia, and J. Dowden, J. Phys. D: Appl. Phys. 22, 1050 (1989).
http://dx.doi.org/10.1088/0022-3727/22/8/007
23.
23. L. Mrna, M. Sarbort, S. Rerucha, and P. Jedlicka, Physics Procedia 41, 462 (2013).
http://dx.doi.org/10.1016/j.phpro.2013.03.103
24.
24. J. Kroos, U. Gratzke, M. Vicanek, and G. Simon, J. Phys. D: Appl. Phys. 26, 481 (1993).
http://dx.doi.org/10.1088/0022-3727/26/3/022
25.
25. T. Klein, M. Vicanek, J. Kroos, I. Decker, and G. Simon, J. Phys. D: Appl. Phys. 27, 2023 (1994).
http://dx.doi.org/10.1088/0022-3727/27/10/006
26.
26. Kägeler Christian and Michael Schmidt, Physics Procedia 5, 447 (2010).
http://dx.doi.org/10.1016/j.phpro.2010.08.072
27.
27. I. A. Krinberg and G. M. Mladenov, Vacuum 77, 407 (2005).
http://dx.doi.org/10.1016/j.vacuum.2004.08.021
28.
28. C. Y. Ho, M. Y. Wen, Y. H. Tsai, and C. Ma, J. of Appl. Physics 110, 013306 (2011).
http://dx.doi.org/10.1063/1.3606581
29.
29. O. V. Kozlov, Elektricheskii zond v plazme (Electric Probe in Plasma) ((Atomizdat, Moscow, 1969) (In Russian).
30.
30. T. Dyakov, M. Bielawski, M. S. Kardjiev, B. E. Djakov, and G. M. Mladenov, Proceedings of the international conference on electron beam technologies (IE BAS, Varna, 1985), 199.
31.
31. S. Iizuka, K. Takada, and N. Sato, J. Plasma Fusion Res. Series 4, 492495 (2001).
32.
32. H. Tanaca, A. Hirose, and M. Koganex, Plasma Phys. Review 161(1), 94 (1967).
http://dx.doi.org/10.1103/PhysRev.161.94
33.
33. V. Kadomtsev, Collective Phenomena in Plasma (Nauka, Moscow, 1976) (1976) (In Russian).
34.
34. A. Artsimovich and R. Sagdeev, Plasma Physics for Physicists (Atomizdat, Moscow, 1989) (In Russian).
35.
35. A. Akhiezer, Ion-acoustic oscillations. Electrodynamics plasma (Nauka, Moscow, 1974) (In Russian).
36.
36. A. Barkan, N. D’Angelo, and R. L. Merlino, Physics Letters 222, 329 (1996).
http://dx.doi.org/10.1016/0375-9601(96)00662-7
37.
37. Chen F. Lieberman, Introduction to plasma physics and controlled fusion (Francis F.: Plenum Press, New York, 1984).
38.
38. D. Trushnikov, V. Belenkiy, V. Shchavlev, A. Piskunov, A. Abdullin, and G. Mladenov, Sensors 12(12), 17433 (2012).
http://dx.doi.org/10.3390/s121217433
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/content/aip/journal/adva/4/4/10.1063/1.4870944
2014-04-08
2016-12-03

Abstract

Many papers have sought correlations between the parameters of secondary particles generated above the beam/work piece interaction zone, dynamics of processes in the keyhole, and technological processes. Low- and high-frequency oscillations of the current, collected by plasma have been observed above the welding zone during electron beam welding. Low-frequency oscillations of secondary signals are related to capillary instabilities of the keyhole, however; the physical mechanisms responsible for the high-frequency oscillations (>10 kHz) of the collected current are not fully understood. This paper shows that peak frequencies in the spectra of the collected high-frequency signal are dependent on the reciprocal distance between the welding zone and collector electrode. From the relationship between current harmonics frequency and distance of the collector/welding zone, it can be estimated that the draft velocity of electrons or phase velocity of excited waves is about 1600 m/s. The dispersion relation with the properties of ion-acoustic waves is related to electron temperature 10 000 K, ion temperature 2 400 K and plasma density 1016 m−3, which is analogues to the parameters of potential-relaxation instabilities, observed in similar conditions. The estimated critical density of the transported current for creating the anomalous resistance state of plasma is of the order of 3 A·m−2, i.e. 8 mA for a 3–10 cm2 collector electrode. Thus, it is assumed that the observed high-frequency oscillations of the current collected by the positive collector electrode are caused by relaxation processes in the plasma plume above the welding zone, and not a direct demonstration of oscillations in the keyhole.

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