Mapping of azimuthal B-fields in Z-pinch plasmas using Z-pinch-driven ion deflectometry

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00351162" target="_blank" >RIV/68407700:21230/21:00351162 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1063/5.0040515" target="_blank" >https://doi.org/10.1063/5.0040515</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0040515" target="_blank" >10.1063/5.0040515</a>

Result language

angličtina

Original language name

Mapping of azimuthal B-fields in Z-pinch plasmas using Z-pinch-driven ion deflectometry

Original language description

B-field measurements are crucial for the study of high-temperature and high-energy-density plasmas. A successful diagnostic method, ion deflectometry (radiography), is commonly employed to measure MGauss magnetic fields in laser-produced plasmas. It is based on the detection of multi-MeV ions, which are deflected in B-fields and measure their path integral. Until now, protons accelerated via laser–target interactions from a point-like source have been utilized for the study of Z-pinch plasmas. In this paper, we present the results of the first Z-pinch-driven ion deflectometry experiments using MeV deuterium beams accelerated within a hybrid gas-puff Z-pinch plasma on the GIT-12 pulse power generator. In our experimental setup, an inserted fiducial deflectometry grid (D-grid) separates the imploding plasma into two regions of the deuteron source and the studied azimuthal B-fields. The D-grid is backlighted by accelerated ions, and its shadow imprinted into the deuteron beams demonstrates ion deflections. In contrast to the employment of the conventional point-like ion source, in our configuration, the ions are emitted from the extensive and divergent source inside the Z-pinch. Instead of having the point ion source, deflected ions are selected via a point projection by a pinhole camera before their detection. Radial distribution of path-integrated B-fields near the axis (within a 15 mm radius) is obtained by analysis of experimental images (deflectograms). Moreover, we present a 2D topological map of local azimuthal B-fields B(r,z) via numerical retrieval of the experimental deflectogram.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

PHYSICS OF PLASMAS

ISSN

1070-664X

e-ISSN

1089-7674

Volume of the periodical

28

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

"062702-1"-"062702-18"

UT code for WoS article

000697413000007

EID of the result in the Scopus database

2-s2.0-85107397444