Ion acceleration mechanism in mega-ampere gas-puff z-pinches

0501864 - FZÚ 2019 RIV GB eng J - Článek v odborném periodiku
Klír, D. - Shishlov, A. V. - Kokshenev, V. A. - Kubeš, P. - Řezáč, K. - Cherdizov, R. K. - Cikhardt, J. - Cikhardtová, B. - Dudkin, G. N. - Fursov, F. I. - Hyhlík, T. - Kaufman, Jan - Kovalchuk, B. M. - Krása, Josef - Kravařík, J. - Kurmaev, N. E. - Labetsky, A. Yu. - Munzar, V. - Orčíková, Hana - Padalko, V. N. - Ratakhin, N. A. - Šíla, O. - Stodůlka, J. - Turek, Karel - Varlachev, V. A. - Wagner, Richard
Ion acceleration mechanism in mega-ampere gas-puff z-pinches.
New Journal of Physics. Roč. 20, č. 5 (2018), s. 1-14, č. článku 053064. ISSN 1367-2630. E-ISSN 1367-2630
Grant CEP: GA ČR GA16-07036S; GA MŠMT LTT17015
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: z-pinch * fast ions * diode * ion diagnostics * current disruption
Obor OECD: Fluids and plasma physics (including surface physics); Fluids and plasma physics (including surface physics) (UJF-V)
Impakt faktor: 3.783, rok: 2018

Acceleration of high energy ions was observed in z-pinches and dense plasma foci as early as the 1950s. Even though many theories have been suggested, the ion acceleration mechanism remains a source of controversy. Recently, the experiments on the GIT-12 generator demonstrated acceleration of ions up to 30 MeV from a deuterium gas-puff z-pinch. High deuteron energies enable us to obtain unique information about spatial, spectral and temporal properties of accelerated ions. In particular, the off-axis ion emission from concentric circles of a similar to 1 cm diameter and the radial lines in an ion beam profile are germane for the discussion of acceleration mechanisms. The acceleration of 30-MeV deuterons can be explained by the fast increase of an impedance with a sub-nanosecond e-folding time. Detailed knowledge of the ion acceleration mechanism is used with a neutron-producing catcher to increase neutron yields above 1013 at a current of 2.7 MA.

Trvalý link: http://hdl.handle.net/11104/0293842