Tunnel ionization within a one-dimensional, undriven plasma sheath

In high density, high temperature plasmas, the plasma sheath that develops can result in extremely high electric fields, on the order of tens to hundreds of V/nm. Under the right conditions, these electric fields can reach magnitudes that can increase the probability of electron tunneling ionization...

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Main Authors: Taylor Hall, Russell Hooper, Nishant Patel, Jose L. Pacheco
Format: Article
Language:English
Published: AIP Publishing LLC 2023-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0142250
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author Taylor Hall
Russell Hooper
Nishant Patel
Jose L. Pacheco
author_facet Taylor Hall
Russell Hooper
Nishant Patel
Jose L. Pacheco
author_sort Taylor Hall
collection DOAJ
description In high density, high temperature plasmas, the plasma sheath that develops can result in extremely high electric fields, on the order of tens to hundreds of V/nm. Under the right conditions, these electric fields can reach magnitudes that can increase the probability of electron tunneling ionization to occur, resulting in one or more electron-ion pairs. The presence of tunneling ionization can then modify the development of the plasma sheath, as well as properties such as the ion and electron densities and plasma potential. The tunnel ionization process for hydrogen atoms is demonstrated, in this work, as implemented in a Sandia National Laboratories, particle-in-cell code Aleph. Results are presented for the application of the tunnel ionization process to a one-dimensional, undriven plasma sheath. Additional results for cases that consider warm ions and neutrals, the inclusion of electron–neutral collisions, and the injection of neutral particles, as well as the application to various plasma devices, will be discussed.
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spelling doaj.art-ad5e3c0f7fcf4ac7b373e04f3ea114172023-07-26T15:31:54ZengAIP Publishing LLCAIP Advances2158-32262023-05-01135055315055315-810.1063/5.0142250Tunnel ionization within a one-dimensional, undriven plasma sheathTaylor Hall0Russell Hooper1Nishant Patel2Jose L. Pacheco3Sandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87123-0878, USASandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87123-0878, USASandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87123-0878, USASandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87123-0878, USAIn high density, high temperature plasmas, the plasma sheath that develops can result in extremely high electric fields, on the order of tens to hundreds of V/nm. Under the right conditions, these electric fields can reach magnitudes that can increase the probability of electron tunneling ionization to occur, resulting in one or more electron-ion pairs. The presence of tunneling ionization can then modify the development of the plasma sheath, as well as properties such as the ion and electron densities and plasma potential. The tunnel ionization process for hydrogen atoms is demonstrated, in this work, as implemented in a Sandia National Laboratories, particle-in-cell code Aleph. Results are presented for the application of the tunnel ionization process to a one-dimensional, undriven plasma sheath. Additional results for cases that consider warm ions and neutrals, the inclusion of electron–neutral collisions, and the injection of neutral particles, as well as the application to various plasma devices, will be discussed.http://dx.doi.org/10.1063/5.0142250
spellingShingle Taylor Hall
Russell Hooper
Nishant Patel
Jose L. Pacheco
Tunnel ionization within a one-dimensional, undriven plasma sheath
AIP Advances
title Tunnel ionization within a one-dimensional, undriven plasma sheath
title_full Tunnel ionization within a one-dimensional, undriven plasma sheath
title_fullStr Tunnel ionization within a one-dimensional, undriven plasma sheath
title_full_unstemmed Tunnel ionization within a one-dimensional, undriven plasma sheath
title_short Tunnel ionization within a one-dimensional, undriven plasma sheath
title_sort tunnel ionization within a one dimensional undriven plasma sheath
url http://dx.doi.org/10.1063/5.0142250
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AT russellhooper tunnelionizationwithinaonedimensionalundrivenplasmasheath
AT nishantpatel tunnelionizationwithinaonedimensionalundrivenplasmasheath
AT joselpacheco tunnelionizationwithinaonedimensionalundrivenplasmasheath