Open AccessFoil liner implosions with a nanosecond rise time of current through the liner
Author(s) -
С. А. Сорокин
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1393/1/012059
Subject(s) - implosion , nanosecond , foil method , materials science , current (fluid) , aluminum foil , plasma , radius , aluminium , rise time , generator (circuit theory) , current density , composite material , layer (electronics) , mechanics , optics , electrical engineering , laser , physics , nuclear physics , engineering , power (physics) , computer security , quantum mechanics , voltage , computer science
The paper presents the results of experiments on the implosion of cylindrical liners made of aluminum foil and mylar film with a deposited layer of aluminum. To reduce the rise time of current through a liner to several nanoseconds (1–3 ns), a low-density plasma was injected into the liner area. The experiments were carried out on the MIG generator at a current level through the liner of about 2 MA. A liner with a diameter of 1.8 mm, made of aluminum-deposited 2.5-μm thick mylar film, implodes in 11 ns and has a final velocity of 2×10 7 cm·s −1 . The radius of pinched plasma is about 80–100 μm, which corresponds to a 20-fold radial convergence of the liner.