Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle

Abstract We report an experimental demonstration of controlling plasma flow direction with a magnetic nozzle consisting of multiple coils. Four coils are controlled separately to form an asymmetric magnetic field to change the direction of laser-produced plasma flow. The ablation plasma deforms the...

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Autores principales:	Taichi Morita, Masafumi Edamoto, Satoshi Miura, Atsushi Sunahara, Naoya Saito, Yutaro Itadani, Tomihiko Kojima, Yoshitaka Mori, Tomoyuki Johzaki, Yoshihiro Kajimura, Shinsuke Fujioka, Akifumi Yogo, Hiroaki Nishimura, Hideki Nakashima, Naoji Yamamoto
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/95448502f1fe48988f19c339536dac6c
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spelling	oai:doaj.org-article:95448502f1fe48988f19c339536dac6c2021-12-02T11:40:23ZControl of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle10.1038/s41598-017-09273-32045-2322https://doaj.org/article/95448502f1fe48988f19c339536dac6c2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-09273-3https://doaj.org/toc/2045-2322Abstract We report an experimental demonstration of controlling plasma flow direction with a magnetic nozzle consisting of multiple coils. Four coils are controlled separately to form an asymmetric magnetic field to change the direction of laser-produced plasma flow. The ablation plasma deforms the topology of the external magnetic field, forming a magnetic cavity inside and compressing the field outside. The compressed magnetic field pushes the plasma via the Lorentz force on a diamagnetic current: j × B in a certain direction, depending on the magnetic field configuration. Plasma and magnetic field structure formations depending on the initial magnetic field were simultaneously measured with a self-emission gated optical imager and B-dot probe, respectively, and the probe measurement clearly shows the difference of plasma expansion direction between symmetric and asymmetric initial magnetic fields. The combination of two-dimensional radiation hydrodynamic and three-dimensional hybrid simulations shows the control of the deflection angle with different number of coils, forming a plasma structure similar to that observed in the experiment.Taichi MoritaMasafumi EdamotoSatoshi MiuraAtsushi SunaharaNaoya SaitoYutaro ItadaniTomihiko KojimaYoshitaka MoriTomoyuki JohzakiYoshihiro KajimuraShinsuke FujiokaAkifumi YogoHiroaki NishimuraHideki NakashimaNaoji YamamotoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Taichi Morita Masafumi Edamoto Satoshi Miura Atsushi Sunahara Naoya Saito Yutaro Itadani Tomihiko Kojima Yoshitaka Mori Tomoyuki Johzaki Yoshihiro Kajimura Shinsuke Fujioka Akifumi Yogo Hiroaki Nishimura Hideki Nakashima Naoji Yamamoto Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
description	Abstract We report an experimental demonstration of controlling plasma flow direction with a magnetic nozzle consisting of multiple coils. Four coils are controlled separately to form an asymmetric magnetic field to change the direction of laser-produced plasma flow. The ablation plasma deforms the topology of the external magnetic field, forming a magnetic cavity inside and compressing the field outside. The compressed magnetic field pushes the plasma via the Lorentz force on a diamagnetic current: j × B in a certain direction, depending on the magnetic field configuration. Plasma and magnetic field structure formations depending on the initial magnetic field were simultaneously measured with a self-emission gated optical imager and B-dot probe, respectively, and the probe measurement clearly shows the difference of plasma expansion direction between symmetric and asymmetric initial magnetic fields. The combination of two-dimensional radiation hydrodynamic and three-dimensional hybrid simulations shows the control of the deflection angle with different number of coils, forming a plasma structure similar to that observed in the experiment.
format	article
author	Taichi Morita Masafumi Edamoto Satoshi Miura Atsushi Sunahara Naoya Saito Yutaro Itadani Tomihiko Kojima Yoshitaka Mori Tomoyuki Johzaki Yoshihiro Kajimura Shinsuke Fujioka Akifumi Yogo Hiroaki Nishimura Hideki Nakashima Naoji Yamamoto
author_facet	Taichi Morita Masafumi Edamoto Satoshi Miura Atsushi Sunahara Naoya Saito Yutaro Itadani Tomihiko Kojima Yoshitaka Mori Tomoyuki Johzaki Yoshihiro Kajimura Shinsuke Fujioka Akifumi Yogo Hiroaki Nishimura Hideki Nakashima Naoji Yamamoto
author_sort	Taichi Morita
title	Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
title_short	Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
title_full	Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
title_fullStr	Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
title_full_unstemmed	Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
title_sort	control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/95448502f1fe48988f19c339536dac6c
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Control of unsteady laser-produced plasma-flow with a multiple-coil magnetic nozzle

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