Spatial and spectral structure of explosively generated plasmas in tubes

N. Poirier; D. Amondson; B. W. Asay; N. Glumac

doi:10.1007/s00193-021-01036-4

Spatial and spectral structure of explosively generated plasmas in tubes

N. Poirier, D. Amondson, B. W. Asay, N. Glumac

Mechanical Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Explosively generated plasmas (EGPs) in straight and conical sections are examined with high-speed imaging and spectroscopy. Fine axial and radial structure is resolved in these EGP systems, suggesting a complex distribution of luminosity that varies spatially and temporally. Spectroscopic analysis identifies the main molecular emitters as OH, CN, and NH, with the majority of the emission in a broad continuum that fits well to a gray body distribution in the 7000–11,000 K range. Emission spectra from CN are fit in the optically thin limit and provide similar temperature.

Original language	English (US)
Pages (from-to)	877-886
Number of pages	10
Journal	Shock Waves
Volume	31
Issue number	8
DOIs	https://doi.org/10.1007/s00193-021-01036-4
State	Published - Nov 2021

Keywords

Air shock
Emission spectroscopy
Explosively generated plasma
Temperature

ASJC Scopus subject areas

Mechanical Engineering
General Physics and Astronomy

Online availability

10.1007/s00193-021-01036-4

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abstract = "Explosively generated plasmas (EGPs) in straight and conical sections are examined with high-speed imaging and spectroscopy. Fine axial and radial structure is resolved in these EGP systems, suggesting a complex distribution of luminosity that varies spatially and temporally. Spectroscopic analysis identifies the main molecular emitters as OH, CN, and NH, with the majority of the emission in a broad continuum that fits well to a gray body distribution in the 7000–11,000 K range. Emission spectra from CN are fit in the optically thin limit and provide similar temperature.",

keywords = "Air shock, Emission spectroscopy, Explosively generated plasma, Temperature",

author = "N. Poirier and D. Amondson and Asay, {B. W.} and N. Glumac",

note = "Publisher Copyright: {\textcopyright} 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.",

year = "2021",

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doi = "10.1007/s00193-021-01036-4",

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TY - JOUR

T1 - Spatial and spectral structure of explosively generated plasmas in tubes

AU - Poirier, N.

AU - Amondson, D.

AU - Asay, B. W.

AU - Glumac, N.

PY - 2021/11

Y1 - 2021/11

N2 - Explosively generated plasmas (EGPs) in straight and conical sections are examined with high-speed imaging and spectroscopy. Fine axial and radial structure is resolved in these EGP systems, suggesting a complex distribution of luminosity that varies spatially and temporally. Spectroscopic analysis identifies the main molecular emitters as OH, CN, and NH, with the majority of the emission in a broad continuum that fits well to a gray body distribution in the 7000–11,000 K range. Emission spectra from CN are fit in the optically thin limit and provide similar temperature.

AB - Explosively generated plasmas (EGPs) in straight and conical sections are examined with high-speed imaging and spectroscopy. Fine axial and radial structure is resolved in these EGP systems, suggesting a complex distribution of luminosity that varies spatially and temporally. Spectroscopic analysis identifies the main molecular emitters as OH, CN, and NH, with the majority of the emission in a broad continuum that fits well to a gray body distribution in the 7000–11,000 K range. Emission spectra from CN are fit in the optically thin limit and provide similar temperature.

KW - Air shock

KW - Emission spectroscopy

KW - Explosively generated plasma

KW - Temperature

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U2 - 10.1007/s00193-021-01036-4

DO - 10.1007/s00193-021-01036-4

M3 - Article

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SN - 0938-1287

VL - 31

SP - 877

EP - 886

JO - Shock Waves

JF - Shock Waves

IS - 8

ER -

Spatial and spectral structure of explosively generated plasmas in tubes

Abstract

Keywords

ASJC Scopus subject areas

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