Abstract
Results are presented from experimental studies of the generation of hard X-ray (HXR) emission with photon energies above 20 keV during the implosion of wire arrays in the Angara-5-1 facility. An analysis of X-ray images of the Z-pinch shows that the dimensions and spatial structures of the emitting regions are different for hard and soft X rays. It is found that the HXR emission peak is delayed with respect to the soft X-ray (SXR) one. The dependence of the HXR power on the material, initial diameter, and mass (implosion time) of the wire array is determined. It is shown that the HXR intensity in the spectral range >50 keV is several orders higher than the emission intensity in the high-energy tail of the SXR spectrum (assuming that this spectrum is thermal). A comparison of the time evolution and spatial localization of the HXR and SXR sources during the implosion of wire arrays indicates the presence of a new superthermal phenomenon that differs qualitatively from the processes determining the peak power of the SXR pulse. Possible mechanisms that can be responsible for the generation of HXR pulses are considered.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S. Yu. Luk’yanov and I. M. Podgornyĭ, At. Énerg., No. 3, 88 (1956).
M. A. Andrianov, O. A. Bazilevskaya, S. I. Braginskii, et al., in Proceedings of the 2nd International Conference on Peaceful Uses of Atomic Energy, Geneva, 1958, Reports of Soviet Scientists, Ed. by A. I. Alikhanov, V. I. Veksler, and N. A. Vlasov (Izd. Glavn. Upr. po Ispol’zovaniyu Atomnoĭ Énergii pri SM SSSR, Moscow, 1959), p. 31 [in Russian].
Z. A. Al’bikov, E. P. Velikhov, A. I. Veretennikov, et al., At. Énerg. 68(1), 26 (1990).
V. V. Aleksandrov, G. S. Volkov, and E. V. Grabovski, et al., in Proceedings of the 16th International Conference on High-Power Particle Beams, Oxford, 2006 (in press).
V. V. Alexandrov, V. E. Fortov, I. N. Frolov, et al., in Proceedings of the 13th International Conference on High-Power Particle Beams, Nagaoka, 2000, p. 142.
A. V. Branitsky and G. M. Oleinik, Prib. Tekh. Éksp., No. 4, 58 (2000) [Instrum. Exp. Tech. 43, (2000)].
N. V. Fillipov, Fiz. Plazmy 9, 25 (1983) [Sov. J. Plasma Phys. 9, 14 (1983)].
V. V. Aleksandrov, E. V. Grabovski, G. G. Zukakishvili, et al., Zh. Éksp. Teor. Fiz. 124, 829 (2003) [JETP 97, 745 (2003)].
B. A. Trubnikov, in Plasma Physics and the Problem of Controlled Thermonuclear Reactions, Ed. by M. A. Leontovich (Izd. Akad. Nauk SSSR, Moscow, 1958; Pergamon, New York, 1960), Vol. 4.
V. V. Vikhrev and S. I. Braginskii, in Reviews of Plasma Physics, Ed. by M. A. Leontovich (Atomizdat, Moscow, 1980; Consultants Bureau, New York, 1986), Vol. 10.
V. V. Yan’kov, Fiz. Plazmy 17, 521 (1991) [Sov. J. Plasma Phys. 17, 305 (1991)].
G. V. Ivanenkov, S. A. Pikuz, T. A. Shelkovenko, et al., Zh. Éksp. Teor. Fiz. 118, 539 (2000) [JETP 91, 469 (2000)].
T. A. Shelkovenko, D. B. Sinars, S. A. Pikuz, and D. A. Hammer, Phys. Plasmas 8, 1305 (2001).
A. L. Velikovich, J. Davis, J. W. Thornhill, et al., Phys. Plasmas 7, 3265 (2000).
L. I. Rudakov, A. L. Velikovich, J. Davis, et al., Phys. Rev. Lett. 84, 3326 (2000).
G. S. Sarkisov, P. V. Sasorov, K. W. Struve, and D. H. McDaniel, Phys. Plasmas 96, 1674 (2004).
V. V. Aleksandrov, E. V. Grabovski, M. V. Zurin, et al., Zh. Éksp. Teor. Fiz. 126, 1317 (2004) [JETP 99, 1150 (2004)].
V. V. Aleksandrov, A. V. Branitsky, G. S. Volkov, et al., Fiz. Plazmy 27, 99 (2001) [Plasma Phys. Rep. 27, 89 (2001)].
Author information
Authors and Affiliations
Additional information
Original Russian Text © V.V. Aleksandrov, E.V. Grabovski, A.N. Gribov, A.N. Gritsuk, S.F. Medovshchikov, G.M. Oleinik, P.V. Sasorov, 2008, published in Fizika Plazmy, 2008, Vol. 34, No. 4, pp. 311–317.
Rights and permissions
About this article
Cite this article
Aleksandrov, V.V., Grabovski, E.V., Gribov, A.N. et al. Hard X-ray emission from imploding wire arrays. Plasma Phys. Rep. 34, 278–283 (2008). https://doi.org/10.1134/S1063780X0804003X
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1063780X0804003X