Neutral copper gas resistivity measurements by means of an exploding wire in air

In this work, we present experimentally obtained limits for the values of the neutral copper gas electrical resistivity as a function of the temperature. When a current of about ≈ 103 A or larger flows through a metallic wire in a microsecond or shorter time, the wire performs a phase change from so...

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Detalles Bibliográficos
Publicado: 2017
Materias:
Copper gas resistivity
Exploding wire
Plasma simulations
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20763417_v7_n8_p_Bilbao
http://hdl.handle.net/20.500.12110/paper_20763417_v7_n8_p_Bilbao
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_20763417_v7_n8_p_Bilbao
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spelling paper:paper_20763417_v7_n8_p_Bilbao2023-06-08T16:34:15Z Neutral copper gas resistivity measurements by means of an exploding wire in air Copper gas resistivity Exploding wire Plasma simulations In this work, we present experimentally obtained limits for the values of the neutral copper gas electrical resistivity as a function of the temperature. When a current of about ≈ 103 A or larger flows through a metallic wire in a microsecond or shorter time, the wire performs a phase change from solid to plasma, through intermediate states of metallic liquid and vapor. If the wire is surrounded by a non-conductive dense medium that inhibits the circulation of current outside the wire (e.g., air at room temperature and standard pressure, as in our experiments), the electric current stops when part of the metallic wire becomes gas. This process is known as dark pause, and it has a duration that depends on the experiment parameters. By means of a suitable choice of parameters, we achieved a duration of the dark pause of ≈ 1 μs, which allowed us to determine the limits of the electrical resistivity of the metallic gas. The range of measured values starts from the resistivity of liquid copper at boiling temperature, and goes up to ≈ 0.01 (± 20%) Ohm m at the maximum measured temperature. © 2017 by the authors. Licensee MDPI, Basel, Switzerland. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20763417_v7_n8_p_Bilbao http://hdl.handle.net/20.500.12110/paper_20763417_v7_n8_p_Bilbao
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Copper gas resistivity
Exploding wire
Plasma simulations
spellingShingle Copper gas resistivity
Exploding wire
Plasma simulations
Neutral copper gas resistivity measurements by means of an exploding wire in air
topic_facet Copper gas resistivity
Exploding wire
Plasma simulations
description In this work, we present experimentally obtained limits for the values of the neutral copper gas electrical resistivity as a function of the temperature. When a current of about ≈ 103 A or larger flows through a metallic wire in a microsecond or shorter time, the wire performs a phase change from solid to plasma, through intermediate states of metallic liquid and vapor. If the wire is surrounded by a non-conductive dense medium that inhibits the circulation of current outside the wire (e.g., air at room temperature and standard pressure, as in our experiments), the electric current stops when part of the metallic wire becomes gas. This process is known as dark pause, and it has a duration that depends on the experiment parameters. By means of a suitable choice of parameters, we achieved a duration of the dark pause of ≈ 1 μs, which allowed us to determine the limits of the electrical resistivity of the metallic gas. The range of measured values starts from the resistivity of liquid copper at boiling temperature, and goes up to ≈ 0.01 (± 20%) Ohm m at the maximum measured temperature. © 2017 by the authors. Licensee MDPI, Basel, Switzerland.
title Neutral copper gas resistivity measurements by means of an exploding wire in air
title_short Neutral copper gas resistivity measurements by means of an exploding wire in air
title_full Neutral copper gas resistivity measurements by means of an exploding wire in air
title_fullStr Neutral copper gas resistivity measurements by means of an exploding wire in air
title_full_unstemmed Neutral copper gas resistivity measurements by means of an exploding wire in air
title_sort neutral copper gas resistivity measurements by means of an exploding wire in air
publishDate 2017
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20763417_v7_n8_p_Bilbao
http://hdl.handle.net/20.500.12110/paper_20763417_v7_n8_p_Bilbao
_version_ 1768543535805497344

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