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100 _a20210310a2020 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aSpatial distribution of ion emission in gas-puff z-pinches and dense plasma foci
_fD. Klir, A. V. Shishlov, S. L. Jackson [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: 49 tit.]
330 _aMega-ampere dense plasma foci and deuterium gas-puff z-pinches can accelerate deuterons to multi-MeV energies. Diagnostic measurements of the properties of these ions provide information about ion acceleration in z-pinch plasmas. In particular, the results from ion pinhole cameras seem to be useful for the discussion of ion acceleration mechanisms. Recently, we have used various configurations of ion pinhole cameras in deuterium gas-puff experiments on the GIT-12 generator at the Institute of High Current Electronics in Tomsk and on the HAWK generator at the US Naval Research Laboratory in Washington. The stack of radiochromic films and CR-39 solid-state nuclear track detectors recorded deuterons with energies up to 30 MeV. From our ion diagnostics, we obtained the spatial distribution of the ion source and the ion-beam divergence during the ion emission. This ion-beam divergence was found to decrease with increasing deuteron energy. At 20 MeV, the divergence of each of the individual micro-beams that composed the ion source was on the order of 10 mrad. The deflection of each micro-beam due to the azimuthal magnetic and/or radial electric fields resulted in radial stripes observed by the beam-profile detectors. By analyzing the ion pinhole images, we found that the deuterons were emitted both from a central spot and from a ring-shaped region with a rather large diameter, on the order of 1 cm. The origin and particular diameter of this ring is attributed to the geometry of the electrodes and to the distribution of the current density before the disruption.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tPlasma Physics and Controlled Fusion
_d1960-
463 _tVol. 62, iss. 3
_v[035009, 13 p.]
_d2020
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aплазма
610 1 _aионы
610 1 _aионные пучки
701 1 _aKlir
_bD.
701 1 _aShishlov
_bA. V.
_cphysicist
_cAssociate Professor of Tomsk Polytechnic University, Candidate of physical and mathematical sciences
_f1968-
_gAleksandr Viktorovich
_2stltpush
_3(RuTPU)RU\TPU\pers\36689
701 1 _aJackson
_bS. L.
701 1 _aKokshenev
_bV. A.
_gVladimir Alekseevich
701 1 _aKubes
_bP.
701 1 _aRezac
_bK.
701 1 _aBeresnyak
_bA. R.
701 1 _aCherdizov
_bR. K.
_gRustam Koshalievich
701 1 _aCikhardt
_bJ.
_gJakub
701 1 _aCikhardtova
_bB.
_gBalzhima
701 1 _aDudkin
_bG. N.
_cspecialist in the field of nuclear physics
_cSenior researcher of Tomsk Polytechnic University, Candidate of physical and mathematical sciences
_f1944-
_gGennadiy Nikolaevich
_2stltpush
_3(RuTPU)RU\TPU\pers\34190
701 1 _aEngelbrecht
_bJ. T.
_gJoseph
701 1 _aFursov
_bF. I.
_gFedor Ivanovich
701 1 _aKaufman
_bJ.
701 1 _aKrasa
_bJ.
712 0 2 _aНациональный исследовательский Томский политехнический университет
_bФизико-технический институт
_bЛаборатория № 33 ядерного реактора
_h6474
_2stltpush
_3(RuTPU)RU\TPU\col\19896
801 2 _aRU
_b63413507
_c20210310
_gRCR
856 4 _uhttps://doi.org/10.1088/1361-6587/ab6902
942 _cCF