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Stabilization of ion beam generation in a diode with self-magnetic insulation in double-pulse mode

Published online by Cambridge University Press:  17 April 2015

A.I. Pushkarev ,
Y.I. Isakova  and
I.P. Khaylov
A.I. Pushkarev*
Affiliation:
Tomsk Polytechnic University, Tomsk, Russia
Y.I. Isakova
Affiliation:
Tomsk Polytechnic University, Tomsk, Russia
I.P. Khaylov
Affiliation:
Tomsk Polytechnic University, Tomsk, Russia
*
Address correspondence and reprint requests to: A.I. Pushkarev, Tomsk Polytechnic University, 2a Lenin Ave., Tomsk634028, Russia. E-mail: [email protected]
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Abstract

The paper presents the results of statistical studies of ion beam generation in different geometry diodes with explosive emission cathode in a mode of self-magnetic insulation. The experiments were carried out using the TEMP-4M pulsed ion beam accelerator during its operation in both unipolar pulse mode (100 ns, 250–300 kV) and bipolar-pulse mode with the first negative (300–600 ns, 100–150 kV) followed by a second positive (120 ns, 250–300 kV) pulse. It is found that the standard deviation of the total energy and energy density of the beam does not exceed 10–11%, while the same shot-to-shot variation in ion current density was found to be 20–30%. The mechanism of the energy density stabilization from pulse to pulse may be associated with the charge exchange between accelerated ions and stationary molecules and formation of accelerated neutrals. We observed a high correlation between the energy density (or total beam energy) and the duration of the first voltage pulse. We performed analysis of Blumlein statistical performance when the Blumlein was terminated with a resistive load and with a self-magnetically insulated ion diode. A characteristic feature of Blumlein operation in the double-pulse mode is an excellent reproducibility of breakdown of the preliminary spark gap, the variation in breakdown voltage is <2%. At the same time, the shot-to-shot variation in the breakdown voltage of the main spark gap in both bipolar- and unipolar pulse mode is 3–4 times higher than that for the preliminary spark gap. To improve the statistical performance of the main spark gap we used the first voltage pulse at the output of Blumlein to trigger the main spark gap. The new trigatron-type regime of the main spark gap operation showed a better reproducibility of the first pulse duration, with the time jitter not exceeding 10 ns in a set of 50 pulses.

Keywords

Energy density stabilizationIntense ion beamsSelf-magnetically insulated diode
Type
Research Article
Information
Laser and Particle Beams , Volume 33 , Issue 2 , June 2015 , pp. 283 - 291
Copyright
Copyright © Cambridge University Press 2015 

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References

REFERENCES

Boyko, N.I., Evdoshenko, L.S., Zarochentsev, A.I. & Ivanov, V.M. (2009). Development of ideas about the triggering mechanisms in trigatrons and their optimal design (a review). i Elektrotechnіka Elektromechanіka 5, 49–55. (in Russian).Google Scholar
Boyko, V.I., Skvortsov, V.A., Fortov, V.E. & Shamanin, I.V. (2003). The interaction of pulsed charged-particle beams with a substance (Fizmatlit, Moscow), p. 286, in Russian.Google Scholar
Davis, H.A., Bartsch, R.R., Olson, J.C., Rej, D.J. & Waganaar, W.J. (1997). Intense ion beam optimization and characterization with infrared imaging. J. Appl. Phys. 2, 3223.CrossRefGoogle Scholar
Humphries, S. (1990). Charged Particle Beams. New York: Wiley, 847 p.Google Scholar
Isakova, Y.I. (2011). Diagnostic equipment for the TEMP-4M generator of high-current pulsed ion beams. J. Korean Phys. Soc. 59, 3531–3535.CrossRefGoogle Scholar
Isakova, Y.I. & Pushkarev, A.I. (2013). Thermal imaging diagnostics of powerful ion beams. Instrum. Exp. Tech. 56, 185–192.CrossRefGoogle Scholar
Isakova, Y.I., Pushkarev, A.I. & Khaylov, I.P. (2013). Statistical analysis of the ion beam production in a self magneticaly insulated diode. Phys. Plasmas 20, 093105.CrossRefGoogle Scholar
Isakova, Y.I., Pushkarev, A.I. & Kholodnaya, G.E. (2011). A differential high-voltage divider. Instrum. Exp. Tech. 54, 183–186.CrossRefGoogle Scholar
Mesyats, G.A. & Proskurovsky, D.I. (1989). Pulsed Electrical Discharge in Vacuum. New York: Springer-Veriag.CrossRefGoogle Scholar
Pogrebnjak, A.D. (1994). Utilization of high power ion beams and high current electron beams for modification of metalline materials. 1994 10th International Conference on High-Power Particle Beams, vol 1, pp. 232–235.Google Scholar
Pointon, T.D. (1989). Charge exchange effects in ion diodes. J. Appl. Phys. 66, 2879.CrossRefGoogle Scholar
Pushkarev, A., Isakova, Y. & Vahrushev, D. (2010). The effect of ion current density amplification in a diode with passive anode in magnetic self-isolation mode. Phys. Plasmas 17, 123112.CrossRefGoogle Scholar
Pushkarev, A.I. & Isakova, Y.I. (2013). A gigawatt power pulsed ion beam generator for industrial application. Surf. Coat. Technol. 228, S382–S384.CrossRefGoogle Scholar
Pushkarev, A.I., Isakova, Y.I. & Khailov, I.P. (2012). Shot-to-shot reproducibility of a self-magnetically insulated ion diode. Rev. Sci. Instrum. 83, 073309.CrossRefGoogle ScholarPubMed
Pushkarev, A.I., Isakova, Y.I. & Khailov, I.P. (2013 a). The influence of a shield on intense ion beam transportation. Laser Part. Beams 31, 493–501.CrossRefGoogle Scholar
Pushkarev, A.I., Isakova, Y.I. & Khaylov, I.P. (2014 a). Investigation of the powerful ion beam energy correlation. Laser Part. Beams 32, 311–319.CrossRefGoogle Scholar
Pushkarev, A.I., Isakova, Y.I. & Khaylov, I.P. (2014 b). Improvement in the statistical operation of a Blumlein pulse forming line in bipolar pulse mode. Rev. Sci. Instrum. 85, 073303.CrossRefGoogle ScholarPubMed
Pushkarev, A.I., Isakova, Y.I., Xiao, Y. & Khailov, I.P. (2013 b). Characterization of intense ion beam energy density and beam induced pressure on the target with acoustic diagnostics. Rev. Sci. Instrum. 84, 083304.CrossRefGoogle ScholarPubMed
Zhu, X.P., Dong, Z.H., Han, X.G., Xin, J.P. & Lei, M.K. (2007). Lifetime of anode polymer in magnetically insulated ion diodes for high-intensity pulsed ion beam generation. Rev. Sci. Instrum. 78, 023301.CrossRefGoogle ScholarPubMed
Zhu, X.P., Lei, M.K., Dong, Z.H. & Ma, T.C. (2003). Characterization of a high-intensity unipolar-mode pulsed ion source with improved magnetically insulated diode. Rev. Sci. Instrum. 74, 47–52.CrossRefGoogle Scholar