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A spiral self-magnetically insulated ion diode

Published online by Cambridge University Press:  12 June 2012

A.I. Pushkarev  and
YU. I. Isakova
A.I. Pushkarev*
Affiliation:
Tomsk Polytechnic University, Tomsk, Russia
YU. I. Isakova
Affiliation:
Tomsk Polytechnic University, Tomsk, Russia
*
Address correspondence and reprint requests to: A.I. Pushkarev, Tomsk Polytechnic University Tomsk, 2A Lenin Ave., Russian Federation. E-mail: [email protected]
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Abstract

The paper presets the results of a study on a self-magnetically insulated ion diode with an explosive-emission potential electrode. The experiments have been carried out using the TEMP-4M accelerator, operating in a double-pulse mode: the first negative pulse (300–500 ns, 100–150 kV) followed by the second positive pulse (150 ns, 250–300 kV). The ion beam energy density was 0.3–2.5 J/cm2; the beam was composed from carbon ions (80–85%) and protons. We studied several geometries of the diode: planar and focusing strip arrangement, annular and spiral geometries. It was shown that during the second voltage pulse, a condition of magnetic insulation in the diode gap is fulfilled (B/Bcr ≥3). Using the new spiral geometry of the diode, it was possible to increase the efficiency of ion current generation due to the suppression of the electron component of the total diode current by increasing the electron transit time in the gap. We have increased the efficiency of carbon ion generation from 5–9% (in the planar strip diodes) up to 17–20% in the spiral diode. The spiral geometry of the diode makes it possible to increase the efficiency of C+ ion generation 25–30 times compared to the space-charge-limited current (Childe-Langmuir limit). This is more than two times higher than in other known geometries of self-magnetically insulated diodes. The spiral diode has a resource of more than 107 pulses.

Keywords

AcceleratorIntense ion beamsSelf-magnetically insulated diode
Type
Research Article
Information
Laser and Particle Beams , Volume 30 , Issue 3 , September 2012 , pp. 427 - 433
Copyright
Copyright © Cambridge University Press 2012

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References

REFERENCES

Langmuir, I. (1913). The effect of space charge and residual gases on thermionic currents in high vacuum. Phys. Rev. 2, 450–486.Google Scholar
Sudan, R. & Lovelace, R. (1973). Generation of intense ion beams in pulsed diodes. Phys. Rev. Lett. 31, 1174–1177.CrossRefGoogle Scholar
Dreike, P., Eichenberger, C., Humphries, S. & Sudan, R. (1976). Production of intense proton fluxes in a magnetically insulated diode. J. Appl. Phys. 47, 85–88.CrossRefGoogle Scholar
Furman, É., Stepanov, A. & Furman, N. (2007). Ionic diode. Techn. Phys. 52, 621.CrossRefGoogle Scholar
Humphries, S. (1977). Self magnetic insulation of pulsed ion diodes. Plasma Phys. 19, 399–406.CrossRefGoogle Scholar
Humphries, S. (1990). Charged Particle Beams. New York: Wiley.Google Scholar
Vandevender, J., Quintenz, J., Leeper, R., Johnson, D. & Crow, J. (1981). Crow self-magnetically insulated ion diode. J. Appl. Phys. 52, 4–12.CrossRefGoogle Scholar
Bystritskii, V., Glushko, Yu., Kharlov, A. & Sinebryukhov, A. (1991). Experiments on high power ion beam generation in self-insulated diodes. Laser Part. Beams 9, 691–698.CrossRefGoogle Scholar
Yoshikawa, T., Masugata, K., Ito, M., Matsui, M. & Yatsui, K. (1984). Planar-type self-magnetically insulated diode as a new source of intense pulsed light-ion beam. J. Appl. Phys. 56, 3137–3140.CrossRefGoogle Scholar
Remnev, G. & Shulov, V. (1993). Application of high-power ion beams for technology. Laser Part. Beams 11, 707–731.CrossRefGoogle Scholar
Bystritski, V. & Didenko, A. (1984). Intense Ion Beams. Moscow: Energoatomizdat.Google Scholar
Pushkarev, A. & Isakova, Yu. (2012). Techn. Phys. 82, 24.Google Scholar
Pushkarev, A., Isakova, Yu. & Vakhrushev, D. (2010). The effect of ion current density amplification in a diode with passive anode in self-magnetic insulation mode. Phys. Plasmas 17, 123112.CrossRefGoogle Scholar
Pushkarev, A., Tarbokov, V., Sazonov, R. & Isakov, I. (2009). Russian Patent RU 86374 U1.Google Scholar
Pushkarev, A., Isakova, Y. & Guselnikov, V. (2011). Limitation of the electron emission in an ion diode with self-magnetic insulation. Phys. Plasmas 18. 083109.CrossRefGoogle Scholar
Pushkarev, A., Isakova, J., Saltimakov, M. & Sazonov, R. (2010). Investigation of magnetically self-insulated effect in an ion diode with an explosive emission potential electrode. Phys. Plasmas 17, 013104.CrossRefGoogle Scholar
Davis, H., Bartsch, R., Olson, J., Rej, D. & Waganaar, W. (1997). Intense ion beam optimization and characterization with infrared imaging. J. Appl. Phys. 82, 3223–3231.CrossRefGoogle Scholar
Antonsen, T. & Ott, E. (1976). Theory of intense ion beam acceleration. Phys. Fluids 19, 52–59.CrossRefGoogle Scholar