Investigation of the Compression of Magnetized Plasma and Magnetic Flux / by Dimitry Mikitchuk.

Format:

Book

Author/Creator:

Mikitchuk, Dimitry, author.

Contributor:

SpringerLink (Online service)

Series:

Physics and Astronomy (Springer-11651)

Springer Theses, Recognizing Outstanding Ph.D. Research,. 2190-5053

Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5053

Language:

English

Subjects (All):

Plasma (Ionized gases).

Nuclear fusion.

Magnetism.

Magnetic materials.

Plasma Physics.

Nuclear Fusion.

Magnetism, Magnetic Materials.

Local Subjects:

Plasma Physics.

Nuclear Fusion.

Magnetism, Magnetic Materials.

Physical Description:

1 online resource (XIV, 91 pages) : 60 illustrations, 58 illustrations in color.

Edition:

First edition 2019.

Contained In:

Springer eBooks

Place of Publication:

Cham : Springer International Publishing : Imprint: Springer, 2019.

System Details:

text file PDF

Summary:

The present research studies the fundamental physics occurring during the magnetic flux and magnetized plasma compression by plasma implosion. This subject is relevant to numerous studies in laboratory and space plasmas. Recently, it has attracted particular interest due to the advances in producing high-energy-density plasmas in fusion-oriented experiments, based on the approach of magnetized plasma compression. The studied configuration consists of a cylindrical gas-puff shell with pre-embedded axial magnetic field that pre-fills the anode-cathode gap. Subsequently, axial pulsed current is driven through the plasma generating an azimuthal magnetic field that compresses the plasma and the axial magnetic field embedded in it. A key parameter for the understanding of the physics occurring during the magnetized plasma compression is the evolution and distribution of the axial and azimuthal magnetic fields. Here, for the first time ever, both fields are measured simultaneously employing non-invasive spectroscopic methods that are based on the polarization properties of the Zeeman effect. These measurements reveal unexpected results of the current distribution and the nature of the equilibrium between the axial and azimuthal fields. These observations show that a large part of the current does not flow in the imploding plasma, rather it flows through a low-density plasma residing at large radii. The development of a force-free current configuration is suggested to explain this phenomenon. Previously unpredicted observations in higher-power imploding-magnetized-plasma experiments, including recent unexplained structures observed in the Magnetized Liner Inertial Fusion experiment, may be connected to the present discovery.

Contents:

Introduction

Theoretical Background

Experimental Setup

Initial Conditions Characterization

Results

Discussion

Conclusions.

Other Format:

Printed edition:

ISBN:

978-3-030-20855-4

9783030208554

Access Restriction:

Restricted for use by site license.