Отправить статью по E-mail Implosion dynamics of condensed Z-pinch at the Angara-5-1 facility
- Авторы: 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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Учреждения:
- Troitsk Institute for Innovation and Fusion Research
- Lebedev Physical Institute
- National Research Center “Kurchatov Institute,”
- Zelinsky Institute of Organic Chemistry
- Выпуск: Том 43, № 8 (2017)
- Страницы: 824-832
- Раздел: Plasma Dynamics
- URL: https://journal-vniispk.ru/1063-780X/article/view/186184
- DOI: https://doi.org/10.1134/S1063780X17080025
- ID: 186184
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Аннотация
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.
Об авторах
V. Aleksandrov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
E. Grabovski
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
A. Gritsuk
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
I. Volobuev
Lebedev Physical Institute
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 119991
E. Kazakov
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 123182
Yu. Kalinin
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 123182
V. Korolev
National Research Center “Kurchatov Institute,”
Автор, ответственный за переписку.
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 123182
Ya. Laukhin
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
S. Medovshchikov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
K. Mitrofanov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
G. Oleinik
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
V. Pimenov
Zelinsky Institute of Organic Chemistry
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 119991
E. Smirnova
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 123182
G. Ustroev
National Research Center “Kurchatov Institute,”
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 123182
I. Frolov
Troitsk Institute for Innovation and Fusion Research
Email: Korolev_VD@nrcki.ru
Россия, Moscow, 142190
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