Enviar artigo por via de e-mail Implosion dynamics of condensed Z-pinch at the Angara-5-1 facility
- Autores: Aleksandrov V.V.1, Grabovski E.V.1, Gritsuk A.N.1, Volobuev I.V.2, Kazakov E.D.3, Kalinin Y.G.3, Korolev V.D.3, Laukhin Y.I.1, Medovshchikov S.F.1, Mitrofanov K.N.1, Oleinik G.M.1, Pimenov V.G.4, Smirnova E.A.3, Ustroev G.I.3, Frolov I.N.1
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Afiliações:
- Troitsk Institute for Innovation and Fusion Research
- Lebedev Physical Institute
- National Research Center “Kurchatov Institute,”
- Zelinsky Institute of Organic Chemistry
- Edição: Volume 43, Nº 8 (2017)
- Páginas: 824-832
- Seção: Plasma Dynamics
- URL: https://journals.rcsi.science/1063-780X/article/view/186184
- DOI: https://doi.org/10.1134/S1063780X17080025
- ID: 186184
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Resumo
The implosion dynamics of a condensed Z-pinch at load currents of up to 3.5 MA and a current rise time of 100 ns was studied experimentally at the Angara-5-1 facility. To increase the energy density, 1- to 3-mm-diameter cylinders made of a deuterated polyethylene−agar-agar mixture or microporous deuterated polyethylene with a mass density of 0.03–0.5 g/cm3 were installed in the central region of the loads. The plasma spatiotemporal characteristics were studied using the diagnostic complex of the Angara-5-1 facility, including electron-optical streak and frame imaging, time-integrated X-ray imaging, soft X-ray (SXR) measurements, and vacuum UV spectroscopy. Most information on the plasma dynamics was obtained using a ten-frame X-ray camera (Е > 100 eV) with an exposure of 4 ns. SXR pulses were recorded using photoemissive vacuum X-ray detectors. The energy characteristics of neutron emission were measured using the time-offlight method with the help of scintillation detectors arranged along and across the pinch axis. The neutron yield was measured by activation detectors. The experimental results indicate that the plasma dynamics depends weakly on the load density. As a rule, two stages of plasma implosion were observed. The formation of hot plasma spots in the initial stage of plasma expansion from the pinch axis was accompanied by short pulses of SXR and neutron emission. The neutron yield reached (0.4–3) × 1010 neutrons/shot and was almost independent of the load density due to specific features of Z-pinch dynamics.
Sobre autores
V. Aleksandrov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
E. Grabovski
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
A. Gritsuk
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
I. Volobuev
Lebedev Physical Institute
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 119991
E. Kazakov
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 123182
Yu. Kalinin
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 123182
V. Korolev
National Research Center “Kurchatov Institute,”
Autor responsável pela correspondência
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 123182
Ya. Laukhin
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
S. Medovshchikov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
K. Mitrofanov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
G. Oleinik
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
V. Pimenov
Zelinsky Institute of Organic Chemistry
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 119991
E. Smirnova
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 123182
G. Ustroev
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 123182
I. Frolov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Rússia, Moscow, 142190
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