Spatially, temporally, and spectrally resolved measurement of laser-induced plasma in air

Kawahara, Nobuyuki; Beduneau, J.L.; Nakayama, Takashi; Tomita, Eiji; Ikeda, Yuji

doi:10.1007/s00340-006-2531-4

Cited by 83 publications

(52 citation statements)

References 25 publications

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“…This timing permits us to calculate the flame kernel size; furthermore, an analysis of the emission spectrum provides information about the temperature inside the kernel and its composition [12,18,36,37]. Fig.…”

Section: Images Analysismentioning

confidence: 99%

Laser-induced radical generation and evolution to a self-sustaining flame

Beduneau

Kawahara

Nakayama

et al. 2009

Combustion and Flame

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Section: Images Analysismentioning

confidence: 99%

Laser-induced radical generation and evolution to a self-sustaining flame

Beduneau

Kawahara

Nakayama

et al. 2009

Combustion and Flame

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“…14 The temporal evolution and space variation of such parameters have been the aim of several publications. [15][16][17][18][19][20][21] For instance, Farid et al 15 have studied the temporal evolution of the electron density n e (deduced from the Stark broadening of copper line at 578.21 nm) and excitation temperature T (deduced from Boltzmann plot method of Cu lines) of a copper plasma expanding in ambient gas with different composition and pressures. They found that n e and T are maximum at a gas pressure of about 100 Torr.…”

Section: Introductionmentioning

confidence: 99%

Axial- and radial-resolved electron density and excitation temperature of aluminum plasma induced by nanosecond laser: Effect of the ambient gas composition and pressure

2015

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The spatial variation of the characteristics of an aluminum plasma induced by a pulsed nanosecond XeCl laser is studied in this paper. The electron density and the excitation temperature are deduced from time- and space- resolved Stark broadening of an ion line and from a Boltzmann diagram, respectively. The influence of the gas pressure (from vacuum up to atmospheric pressure) and compositions (argon, nitrogen and helium) on these characteristics is investigated. It is observed that the highest electron density occurs near the laser spot and decreases by moving away both from the target surface and from the plume center to its edge. The electron density increases with the gas pressure, the highest values being occurred at atmospheric pressure when the ambient gas has the highest mass, i.e. in argon. The excitation temperature is determined from the Boltzmann plot of line intensities of iron impurities present in the aluminum target. The highest temperature is observed close to the laser spot location for argon at atmospheric pressure. It decreases by moving away from the target surface in the axial direction. However, no significant variation of temperature occurs along the radial direction. The differences observed between the axial and radial direction are mainly due to the different plasma kinetics in both directions.

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“…[16][17][18][19][20] The wavelength measurements of emission spectra of the CO 2 LIB plasma in N 2 , O 2 , and air have been reported recently by us. [21][22][23] We have also reported studies on the temporal evolution of the LIB plasma of graphite.…”

Section: Introductionmentioning

confidence: 94%

Time-resolved optical emission spectroscopy of laser-produced air plasma

Camacho

Díaz

Santos

et al. 2010

Journal of Applied Physics

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Nonmonotonic radial distribution of excited atoms in a positive column of pulsed direct currect discharges in helium Appl. Phys. Lett. 102, 034104 (2013) Iterative Boltzmann plot method for temperature and pressure determination in a xenon high pressure discharge lamp J. Appl. Phys. 113, 043303 (2013) Surface loss probability of H radicals on silicon thin films in SiH4/H2 plasma J. Appl. Phys. 113, 013303 (2013) A large volume uniform plasma generator for the experiments of electromagnetic wave propagation in plasma Phys. Plasmas 20, 012101 (2013) Diagnosing the plasma nonuniformity in an iron opacity experiment by spatially resolved Al 1s-2p absorption spectroscopy Phys. Plasmas 19, 123301 (2012) Additional information on J. Appl. Phys. The results show a faster decay of continuum and ionic spectral species than of neutral atomic and molecular ones. The velocity and kinetic energy distributions for the different species were obtained from time-of-flight measurements. Excitation temperature and electron density in the laser-induced plasma were estimated from the analysis of spectral data at various times from the laser pulse incidence. Temporal evolution of electron density has been used for the estimation of the three-body recombination rate constant.

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Spatially, temporally, and spectrally resolved measurement of laser-induced plasma in air

Cited by 83 publications

References 25 publications

Laser-induced radical generation and evolution to a self-sustaining flame

Laser-induced radical generation and evolution to a self-sustaining flame

Axial- and radial-resolved electron density and excitation temperature of aluminum plasma induced by nanosecond laser: Effect of the ambient gas composition and pressure

Time-resolved optical emission spectroscopy of laser-produced air plasma

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