An evaluation of equilibrium conditions and temperature-dependent speciation in a laser-produced air plasma
Abstract
A laser-produced air plasma is a dynamical system with fundamental physical parameters that change significantly during its lifespan. The evolution of the spectral features from an air plasma shows broadband radiation at early times followed by discrete electronic transitions from ions, atoms, and rotational and vibration bands from molecules. The molecular band emission from an air plasma typically appears at times ⪞5 μs and persists for 100's of μs. In this article, an evaluation is made on the temperature evolution and speciation in a laser-produced air plasma. The air plasmas are generated by focusing 1064 nm, 6 ns pulses from an Nd:YAG laser. High-resolution emission spectra of various molecules such as N2, N2+, CN, OH, NH, and NO are acquired and fit using spectral models. Fitting of atomic and molecular emission features permits tracking of the air spark temperature evolution from 1 to 200 μs. Though the excitation and molecular temperatures show a good overlap at times ⪝10 μs, the molecular temperatures obtained from different species show a discontinuity at times ∼30 μs and this is related to shock collapse and subsequent changes in hydrodynamics and chemistry of the plume. The fitting of multiple species in broadband spectra has permitted calculation ofmore »
- Authors:
-
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Publication Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation
- OSTI Identifier:
- 1491739
- Alternate Identifier(s):
- OSTI ID: 1463383
- Report Number(s):
- PNNL-SA-133663
Journal ID: ISSN 1070-664X
- Grant/Contract Number:
- AC05-76RL01830
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 8; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Laser-induced breakdown; Plasma Diagnostics; Emission Spectroscopy; Spectroscopy; laser spark; Laser-produced plasma
Citation Formats
Harilal, S. S., Brumfield, B. E., and Phillips, M. C. An evaluation of equilibrium conditions and temperature-dependent speciation in a laser-produced air plasma. United States: N. p., 2018.
Web. doi:10.1063/1.5041987.
Harilal, S. S., Brumfield, B. E., & Phillips, M. C. An evaluation of equilibrium conditions and temperature-dependent speciation in a laser-produced air plasma. United States. https://doi.org/10.1063/1.5041987
Harilal, S. S., Brumfield, B. E., and Phillips, M. C. Wed .
"An evaluation of equilibrium conditions and temperature-dependent speciation in a laser-produced air plasma". United States. https://doi.org/10.1063/1.5041987. https://www.osti.gov/servlets/purl/1491739.
@article{osti_1491739,
title = {An evaluation of equilibrium conditions and temperature-dependent speciation in a laser-produced air plasma},
author = {Harilal, S. S. and Brumfield, B. E. and Phillips, M. C.},
abstractNote = {A laser-produced air plasma is a dynamical system with fundamental physical parameters that change significantly during its lifespan. The evolution of the spectral features from an air plasma shows broadband radiation at early times followed by discrete electronic transitions from ions, atoms, and rotational and vibration bands from molecules. The molecular band emission from an air plasma typically appears at times ⪞5 μs and persists for 100's of μs. In this article, an evaluation is made on the temperature evolution and speciation in a laser-produced air plasma. The air plasmas are generated by focusing 1064 nm, 6 ns pulses from an Nd:YAG laser. High-resolution emission spectra of various molecules such as N2, N2+, CN, OH, NH, and NO are acquired and fit using spectral models. Fitting of atomic and molecular emission features permits tracking of the air spark temperature evolution from 1 to 200 μs. Though the excitation and molecular temperatures show a good overlap at times ⪝10 μs, the molecular temperatures obtained from different species show a discontinuity at times ∼30 μs and this is related to shock collapse and subsequent changes in hydrodynamics and chemistry of the plume. The fitting of multiple species in broadband spectra has permitted calculation of the relative concentrations of various molecules as a function of temperature that provides insight into the air spark speciation. The measured relative mole fractions from laser-induced air plasma are within factors of 2–6 of the values estimated by speciation model under the assumption of thermal and chemical equilibrium across the temperature ranges studied. Probable reasons for the observed deviation in the relative fractions are discussed.},
doi = {10.1063/1.5041987},
journal = {Physics of Plasmas},
number = 8,
volume = 25,
place = {United States},
year = {Wed Aug 08 00:00:00 EDT 2018},
month = {Wed Aug 08 00:00:00 EDT 2018}
}
Web of Science
Works referenced in this record:
Laboratory-Scale Method for Estimating Explosive Performance from Laser-Induced Shock Waves
journal, May 2015
- Gottfried, Jennifer L.
- Propellants, Explosives, Pyrotechnics, Vol. 40, Issue 5
Optical diagnostics of atmospheric pressure air plasmas
journal, February 2003
- Laux, C. O.; Spence, T. G.; Kruger, C. H.
- Plasma Sources Science and Technology, Vol. 12, Issue 2
Properties of an air plasma generated by ultraviolet nanosecond laser pulses
journal, March 2009
- El-Rabii, Hazem; Victorov, Sergey B.; Yalin, Azer P.
- Journal of Physics D: Applied Physics, Vol. 42, Issue 7
THE LASER ISOTOPE SEPARATION PROGRAM AT LAWRENCE LIVERMORE LABORATORY.: Laser Isotope Separation
journal, January 1976
- Stern, R. C.; Snavely, B. B.
- Annals of the New York Academy of Sciences, Vol. 267, Issue 1 Third Confere
Time-resolved optical emission spectroscopy of laser-produced air plasma
journal, April 2010
- Camacho, J. J.; Díaz, L.; Santos, M.
- Journal of Applied Physics, Vol. 107, Issue 8
Energy Absorption and Propagation in Laser-Created Sparks
journal, June 2004
- Bindhu, C. V.; Harilal, S. S.; Tillack, M. S.
- Applied Spectroscopy, Vol. 58, Issue 6
Numerical investigation of nanosecond laser induced plasma and shock wave dynamics from air using 2D hydrodynamic code
journal, August 2017
- Sai Shiva, S.; Leela, Ch.; Prem Kiran, P.
- Physics of Plasmas, Vol. 24, Issue 8
On- and off-axis spectral emission features from laser-produced gas breakdown plasmas
journal, June 2017
- Harilal, S. S.; Skrodzki, P. J.; Miloshevsky, A.
- Physics of Plasmas, Vol. 24, Issue 6
Temporal evolution of the shock wave and hot core air in laser induced plasma
journal, November 2000
- Sobral, Hugo; Villagrán-Muniz, Mayo; Navarro-González, Rafael
- Applied Physics Letters, Vol. 77, Issue 20
Shock Wave Mediated Plume Chemistry for Molecular Formation in Laser Ablation Plasmas
journal, January 2016
- Harilal, Sivanandan S.; Brumfield, Brian E.; Cannon, Bret D.
- Analytical Chemistry, Vol. 88, Issue 4
Characterization of laser-induced plasmas as a complement to high-explosive large-scale detonations
journal, September 2017
- Kimblin, Clare; Trainham, Rusty; Capelle, Gene A.
- AIP Advances, Vol. 7, Issue 9
Measurement and analysis of OH emission spectra following laser-induced optical breakdown in air
journal, January 2003
- Parigger, Christian G.; Guan, Guoming; Hornkohl, James O.
- Applied Optics, Vol. 42, Issue 30
Time-resolved laser-induced breakdown spectrometry of aerosols
journal, July 1983
- Radziemski, Leon J.; Loree, Thomas R.; Cremers, David A.
- Analytical Chemistry, Vol. 55, Issue 8
Lifecycle of laser-produced air sparks
journal, June 2015
- Harilal, S. S.; Brumfield, B. E.; Phillips, M. C.
- Physics of Plasmas, Vol. 22, Issue 6
Two-dimensional numerical simulation of a decaying laser spark in air with radiation loss
journal, August 2013
- Joarder, R.; Gebel, G. C.; Mosbach, T.
- International Journal of Heat and Mass Transfer, Vol. 63
Experimental investigation of ultraviolet laser induced plasma density and temperature evolution in air
journal, July 2008
- Thiyagarajan, Magesh; Scharer, John
- Journal of Applied Physics, Vol. 104, Issue 1
In uence of ambient conditions on the laser air spark
journal, January 1999
- Yalçin, Ş.; Crosley, D. R.; Smith, G. P.
- Applied Physics B: Lasers and Optics, Vol. 68, Issue 1
Temperatures of Spark Kernels Discharging into Quiescent or Crossflow Conditions
journal, January 2017
- Okhovat, N. Sebastian; Hauth, Jeremiah M.; Blunck, David L.
- Journal of Thermophysics and Heat Transfer, Vol. 31, Issue 1
Ideal radiation source for plasma spectroscopy generated by laser ablation
journal, November 2017
- Hermann, Jörg; Grojo, David; Axente, Emanuel
- Physical Review E, Vol. 96, Issue 5
Characterization of laser-induced plasma during its expansion in air by optical emission spectroscopy: Observation of strong explosion self-similar behavior
journal, July 2014
- Aguilera, J. A.; Aragón, C.
- Spectrochimica Acta Part B: Atomic Spectroscopy, Vol. 97
Mechanism and modeling of nitrogen chemistry in combustion
journal, January 1989
- Miller, James A.; Bowman, Craig T.
- Progress in Energy and Combustion Science, Vol. 15, Issue 4
Spectroscopic studies of laser-produced plasmas formed in CO and CO2 using 193, 266, 355, 532 and 1064 nm laser radiation
journal, July 1994
- Simeonsson, J. B.; Miziolek, A. W.
- Applied Physics B Laser and Optics, Vol. 59, Issue 1
Investigation of the State of Local Thermodynamic Equilibrium of a Laser-Produced Aluminum Plasma
journal, April 2005
- Barthélemy, Olivier; Margot, Joëlle; Laville, Stéphane
- Applied Spectroscopy, Vol. 59, Issue 4
Pulse train ignition with passively Q-switched laser spark plugs
journal, July 2015
- Lorenz, Sebastian; Bärwinkel, Mark; Stäglich, Robert
- International Journal of Engine Research, Vol. 17, Issue 1
Evolution of flame-kernel in laser-induced spark ignited mixtures: A parametric study
journal, February 2016
- Mulla, Irfan A.; Chakravarthy, Satyanarayanan R.; Swaminathan, Nedunchezhian
- Combustion and Flame, Vol. 164
The physical mechanism of nitric oxide formation in simulated lightning
journal, October 2001
- Navarro-González, Rafael; Villagrán-Muniz, Mayo; Sobral, Hugo
- Geophysical Research Letters, Vol. 28, Issue 20
Exploring the formation routes of diatomic hydrogenated radicals using femtosecond laser-induced breakdown spectroscopy of deuterated molecular solids
journal, January 2015
- Serrano, Jorge; Moros, Javier; Laserna, J. Javier
- Journal of Analytical Atomic Spectrometry, Vol. 30, Issue 11
Spatial and temporal profiles of pulsed laser-induced air plasma emissions
journal, October 2000
- Chen, Y. -L; Lewis, J. W. L.; Parigger, C.
- Journal of Quantitative Spectroscopy and Radiative Transfer, Vol. 67, Issue 2
Two-dimensional measurements of laser-induced breakdown in air by high-speed two-frame shadowgraphy
journal, September 2012
- Gregorčič, Peter; Diaci, Janez; Možina, Janez
- Applied Physics A, Vol. 112, Issue 1
Local Thermodynamic Equilibrium in Laser-Induced Breakdown Spectroscopy: Beyond the McWhirter criterion
journal, January 2010
- Cristoforetti, G.; De Giacomo, A.; Dell'Aglio, M.
- Spectrochimica Acta Part B: Atomic Spectroscopy, Vol. 65, Issue 1
Spatial and temporal evolution of argon sparks
journal, January 2004
- Harilal, Sivanandan S.
- Applied Optics, Vol. 43, Issue 19
Temporal and Spatial Evolution of a Laser Spark in Air
journal, September 2005
- Glumac, Nick; Elliott, Gregory; Boguszko, Martin
- AIAA Journal, Vol. 43, Issue 9
Optical spectroscopy of laser-produced plasmas for standoff isotopic analysis
journal, June 2018
- Harilal, S. S.; Brumfield, B. E.; LaHaye, N. L.
- Applied Physics Reviews, Vol. 5, Issue 2
Works referencing / citing this record:
Role of laser absorption and equation-of-state models on ns laser induced ablative plasma and shockwave dynamics in ambient air: Numerical and experimental investigations
journal, July 2019
- Sai Shiva, S.; Leela, Ch.; Prem Kiran, P.
- Physics of Plasmas, Vol. 26, Issue 7