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Title: Disorder-induced heating as a mechanism for fast neutral gas heating in atmospheric pressure plasmas

Abstract

Abstract Recent findings suggest that ions are strongly correlated in atmospheric pressure plasmas if the ionization fraction is sufficiently high ( 10 5 ). A consequence is that ionization causes disorder-induced heating (DIH), which triggers a significant rise in ion temperature on a picosecond timescale. This is followed by a rise in the neutral gas temperature on a longer timescale of up to nanoseconds due to ion–neutral temperature relaxation. The sequence of DIH and ion–neutral temperature relaxation suggests a new mechanism for ultrafast neutral gas heating. Previous work considered only the case of an instantaneous ionization pulse, whereas the ionization pulse extends over nanoseconds in many experiments. Here, molecular dynamics simulations are used to analyze the evolution of ion and neutral gas temperatures for a gradual ionization over several nanoseconds. The results are compared with published experimental results from a nanosecond pulsed discharge, showing good agreement with a measurement of fast neutral gas heating.

Authors:
ORCiD logo; ORCiD logo; ORCiD logo
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
2293604
Alternate Identifier(s):
OSTI ID: 2283770; OSTI ID: 2311250
Report Number(s):
SAND-2024-01480J
Journal ID: ISSN 0963-0252
Grant/Contract Number:  
SC0022201; NA0003525
Resource Type:
Published Article
Journal Name:
Plasma Sources Science and Technology
Additional Journal Information:
Journal Name: Plasma Sources Science and Technology Journal Volume: 33 Journal Issue: 2; Journal ID: ISSN 0963-0252
Publisher:
IOP Publishing
Country of Publication:
United Kingdom
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CAPP; atmospheric pressure plasmas; strong correlations; strongly coupled; disorder induced heating; fast neutral gas heating

Citation Formats

Acciarri, M. D., Moore, C., and Baalrud, S. D. Disorder-induced heating as a mechanism for fast neutral gas heating in atmospheric pressure plasmas. United Kingdom: N. p., 2024. Web. doi:10.1088/1361-6595/ad257e.
Acciarri, M. D., Moore, C., & Baalrud, S. D. Disorder-induced heating as a mechanism for fast neutral gas heating in atmospheric pressure plasmas. United Kingdom. https://doi.org/10.1088/1361-6595/ad257e
Acciarri, M. D., Moore, C., and Baalrud, S. D. Thu . "Disorder-induced heating as a mechanism for fast neutral gas heating in atmospheric pressure plasmas". United Kingdom. https://doi.org/10.1088/1361-6595/ad257e.
@article{osti_2293604,
title = {Disorder-induced heating as a mechanism for fast neutral gas heating in atmospheric pressure plasmas},
author = {Acciarri, M. D. and Moore, C. and Baalrud, S. D.},
abstractNote = {Abstract Recent findings suggest that ions are strongly correlated in atmospheric pressure plasmas if the ionization fraction is sufficiently high ( ≳ 10 − 5 ). A consequence is that ionization causes disorder-induced heating (DIH), which triggers a significant rise in ion temperature on a picosecond timescale. This is followed by a rise in the neutral gas temperature on a longer timescale of up to nanoseconds due to ion–neutral temperature relaxation. The sequence of DIH and ion–neutral temperature relaxation suggests a new mechanism for ultrafast neutral gas heating. Previous work considered only the case of an instantaneous ionization pulse, whereas the ionization pulse extends over nanoseconds in many experiments. Here, molecular dynamics simulations are used to analyze the evolution of ion and neutral gas temperatures for a gradual ionization over several nanoseconds. The results are compared with published experimental results from a nanosecond pulsed discharge, showing good agreement with a measurement of fast neutral gas heating.},
doi = {10.1088/1361-6595/ad257e},
journal = {Plasma Sources Science and Technology},
number = 2,
volume = 33,
place = {United Kingdom},
year = {Thu Feb 08 00:00:00 EST 2024},
month = {Thu Feb 08 00:00:00 EST 2024}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1088/1361-6595/ad257e

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