Author:
Kurkuchekov V.V.,Atlukhanov M.G.,Burdakov A.V.,Danilov V.V.,Popov S.S.,Skovorodin D.I.,Trunev Yu.A.,Kholopov M.A.,Popov A.S.,Lemzyakov A.G.,Petrozhitskiy A.V.,Rousskikh A.G.,Artyomov A.P.,Fedyunin A.V.,Zhigalin A.S,Erfort A.A.,Kolesnikov P.A.,Politov V.Yu.,Nikitin O.A.,Akhmetov A.R.
Abstract
Abstract
A radiographic diagnostic has been developed to quantify the
plume of erosion products after the interaction between a target and
a relativistic electron beam. The diagnostic is based on a point
Z-pinch (PZ-pinch) with a metallic plasma jet. It creates an X-ray
source with a typical size of 10 μm, a photon energy of up to
3 keV and a flash duration of 3 ns. The X-ray visualization system
is based on a thin scintillator and a CCD camera. The spatial
resolution of the diagnostic was evaluated experimentally. The
spatial frequency limit was found to be about 1.5 line pairs per
millimeter.
The diagnostic was tested in an experiment performed using an LIA-5
linear induction accelerator. An electron beam with a current of
400 A, an energy of 3.5 MeV and a pulse duration of 80 ns was
focused on a plane tantalum target 1 mm in thickness. The FWHM of
the focal spot was ∼ 2 mm. Radiographs of the plume were taken
with different delays after different accelerator pulses. According
to our data, the plume most commonly propagates toward the
beam. After 70 μs its length was about 70 mm, i.e. the
plume expansion rate was about 1 km/s. The area density of the
semi-transparent regions of the plume was estimated as lying in the
range 3 · 10-16–2 · 1017 cm-2.
Subject
Mathematical Physics,Instrumentation
Cited by
3 articles.
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