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Hard X-ray emission in laser-induced vacuum discharge

Published online by Cambridge University Press:  30 August 2005

YU.V. KOROBKIN ,
I.V. ROMANOV ,
A.A. RUPASOV ,
A.S. SHIKANOV ,
P.D. GUPTA ,
R.A. KHAN ,
S.R. KUMBHARE ,
A. MOORTI  and
P.A. NAIK
YU.V. KOROBKIN
Affiliation:
P.N. Lebedev Physical Institute, Moscow, Russia
I.V. ROMANOV
Affiliation:
P.N. Lebedev Physical Institute, Moscow, Russia
A.A. RUPASOV
Affiliation:
P.N. Lebedev Physical Institute, Moscow, Russia
A.S. SHIKANOV
Affiliation:
P.N. Lebedev Physical Institute, Moscow, Russia
P.D. GUPTA
Affiliation:
Centre for Advanced Technology, Indore, India
R.A. KHAN
Affiliation:
Centre for Advanced Technology, Indore, India
S.R. KUMBHARE
Affiliation:
Centre for Advanced Technology, Indore, India
A. MOORTI
Affiliation:
Centre for Advanced Technology, Indore, India
P.A. NAIK
Affiliation:
Centre for Advanced Technology, Indore, India
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Abstract

The dynamics of fast laser-induced vacuum discharge, with a rather small value of amplitude of current (≤ 10 kA), as well as the voltage and energy of the capacitor bank (≤ 20 kV and 20 J, respectively), have been investigated. It has been experimentally demonstrated that the initiations conditions determined by the energy and duration of the laser radiation, fundamentally determine the dynamics of the discharge. Two types of space and time separated plasma instabilities are revealed. It was found that the first of instabilities occurs at the initial stage of the discharge and is caused by a pinch structure, which takes place in front of a cathode jet extending in vacuum. The second type of instabilities arises at the top or recession of the current and is accompanied by the generation of hard (energy ≥100 keV) bremsstrahlung X-ray radiation from the anode area. The excess energy of the hard components of radiation over the potential of the current source is associated with the effects of plasma-erosive breaking.

Keywords

Laser triggeredPinch effectPlasma-erosive breakingVacuum dischargeX-ray emission
Type
Research Article
Information
Laser and Particle Beams , Volume 23 , Issue 3 , September 2005 , pp. 333 - 336
Copyright
© 2005 Cambridge University Press

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Footnotes

This paper was presented at the 28th ECLIM conference in Rome, Italy.

References

REFERENCES

Artamonov, M.F., Krasov, V.I. & Paperny, V.I. (2002). Generation of ultrasoft X-ray emission from cathode jet of a vacuum discharge. Russian J. Prikladnay Fizika 5, 69–74.Google Scholar
Barentgolts, S.A., Mesyats, G.A. & Perelshtein, E.A. (2000). The model of collective accelerated ions in vacuum discharge on basis of conception of a deep potential well. Russian J. JETF. 91, 1176–1183.Google Scholar
Bugaev, A.S., Vizir, A.V., Gushenets, V.I., Nikolaev, A.G., Oks, E.M., Yushkov, G.Y., Burachevsky, Y.A., Burdovitsin, V.A., Osipov, I.V. & Rempe, N.G. (2003). Current status of plasma emission electronics: II. Hardware. Laser Part. Beams 21, 139–156.Google Scholar
Erokhin, A.A., Kisinets, A.S., Korobkin, Yu.V., Romanov, I.V., Romanova, V.M., Rupasov, A.A., Shikanov, A.S. (2001). Analysis of caracteristic X-ray generation induced by laser plasma electrons accelerated by an electric field. Russian J. JETF. 92, 998–1003.Google Scholar
Filippov, N.V. (1983). Experiments on plasma focus in the Kurchatov Institute of Atomic Energy. Russian J. Fizika Plazmy. 9, 25–44.Google Scholar
Gushenets, V.I., Oks, E.M., Yushkov, G.Y. & Rempe, N.G. (2003). Current status of plasma emission electronics: I. Basic physical processes. Laser Part. Beams 21, 123–138.Google Scholar
Kishinets, A.S., Korobkin, Yu.V., Romanov, I.V., Rupasov, A.A., Shikanov, A.S., Moorti, A., Naik, P.A. & Gupta, P.D. (2004). Stabilization of X-ray source based on the vacuum diode with the laser-plasma cathode. Russian J. Fizika Plazmy. 30, 263–268.Google Scholar
Krinberg, I.A. & Paperny, V.L. (2002). Pinch effect in vacuum arc plasma sources under moderate discharge currents J. Phys. D. Appl. Phys. 35, 549–562.Google Scholar
Korobkin, Yu.V., Romanov, I.V., Rupasov, A.A., Fedin, D.A., Shikanov, A.S., Moorti, A., Raghuramiah, M., Upadhya, J., Kumbhare, S.R., Sailaja, S., Arora, V., Naik, P.A. & Gupta, P.D. (1999). Investigation of laser driven vacuum diode X-ray source of photon energy ∼ 5 keV. Laser Part. Beams 17, 499–507.Google Scholar
Panchenko, A.N., Orlovskii, V.M. & Tarasenko, V.F. (2003). Efficient e-beam and discharge initiated nonchain HF (DF) lasers. Laser Part. Beams 21, 223–242.Google Scholar
Romanov, I.V., Korobkin, Yu.V., Kishinets, A.S., Rupasov, A.A., Shikanov, A.S., Moorti, A., Naik, P.A. & Gupta, P.D. (2003). The features of electrical current in the X-ray source based on the vacuum diode with the laser-plasma cathode. Proceedings of SPIE 5228, 637–642.Google Scholar
Vogel, V. & Skvortsov, V.A. (1997). Plasma parameters within the cathode spot of laser-induced vacuum arcs: experimental and theoretical investigations. IEEE Trans. Plasma Sci. 25, 553–563.Google Scholar