Characterization of a laser plasma produced from a graphite target

Ruiz, M; Guzmán, F.; Favre, M.; Hevia, Samuel A.; Correa, N; Bhuyan, H.; Wynham, E S; Chuaqui, H.

doi:10.1088/1742-6596/511/1/012064

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…Besides, C II (wavelength 426.7, 514.6, and 589.1 nm), 31 and CN (wavelength 388.3, 359 and 421.6 nm) 29 are observed on the spectra. The C II emission lines are commonly observed in the methane working gas.…”

Section: Resultsmentioning

confidence: 93%

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li₄Ti₅O₁₂Electrode as a High Rate Anode Material for Lithium Ion Batteries

Lin

Yang

et al. 2018

J. Electrochem. Soc.

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Atmospheric pressure Ar/N 2 plasma jet irradiation through carbon working electrode is applied into the manufacturing process to improve electrochemical performance of commercial Li 4 Ti 5 O 12 electrode. The rate capability is significantly enhanced due to plasma treatment. Plasma emission spectra is measured by optical emission spectroscopy, showing typical nitrogen band, argon band and C 2 , CN lines. Morphology and elemental mapping are characterized by scanning electron microscope, transmission electron microscope, and electron probe micro-analyzer. The compact carbon species can be observed clearly, and the pores can be filled by nanocarbon, forming complete conducting network. The chemical states are confirmed by X-ray photoelectron spectroscopy, providing the evidence of nitrogen bonding with carbon. The properties of carbon are also confirmed by Raman spectra. These features are reflected to better electrochemical performances and electrochemical impedance spectroscopy results. The plasma treated sample exhibits a superior capacity and excellent stability with almost no capacity decay at high charging rate (10 C) after 300 cycles.

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Section: Resultsmentioning

confidence: 93%

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li₄Ti₅O₁₂Electrode as a High Rate Anode Material for Lithium Ion Batteries

Lin

Yang

et al. 2018

J. Electrochem. Soc.

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“…For Larmor radius effects to be relevant in determining the plasma dynamics, the ion Larmor radius has to be at least of the order of the characteristic linear dimensions of the laser-magnetic field interaction volume. Although no direct measurements of the plasma temperature have been performed in these experiments, by using available data from graphite targets, using the same laser parameters and background conditions as reported here, 32 or similar ones available in the literature, 21,[33][34][35] the ion Larmor radius for the average magnetic field strength in this case is estimated to be of the order of a few millimeters. As this value is about one tenth of the characteristic linear dimensions of the plasma expansion volume, two finite Larmor radius effects are expected to influence plasma behavior.…”

Section: Aip Advances 7 085002 (2017)mentioning

confidence: 99%

Effects of a static inhomogeneous magnetic field acting on a laser-produced carbon plasma plume

et al. 2017

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“…Such transient plasmas play a significant role in the production of various nanostructured materials (carbon nanotubes, nanowires, graphene, etc.) [11][12][13], and controlling their properties (expansion velocities, density, and temperature) allows a significant enhancement of the deposition process [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Fractal Method for Modeling the Peculiar Dynamics of Transient Carbon Plasma Generated by Excimer Laser Ablation in Vacuum

Ursu¹,

Nica

Focşa

et al. 2018

Complexity

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Carbon plasmas generated by excimer laser ablation are often applied for deposition (in vacuum or under controlled atmosphere) of high-technological interest nanostructures and thin films. For specific excimer irradiation conditions, these transient plasmas can exhibit peculiar behaviors when probed by fast time- and space-resolved optical and electrical methods. We propose here a fractal approach to simulate this peculiar dynamics. In our model, the complexity of the interactions between the transient plasma particles (in the Euclidean space) is substituted by the nondifferentiability (fractality) of the motion curves of the same particles, but in a fractal space. For plane symmetry and particular boundary conditions, stationary geodesic equations at a fractal scale resolution give a fractal velocity field with components expressed by means of nonlinear solutions (soliton type, kink type, etc.). The theoretical model successfully reproduces the (surprising) formation of V-like radiating plasma structures (consisting of two lateral arms of high optical emissivity and a fast-expanding central part of low emissivity) experimentally observed.

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Characterization of a laser plasma produced from a graphite target

Cited by 6 publications

References 5 publications

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li₄Ti₅O₁₂Electrode as a High Rate Anode Material for Lithium Ion Batteries

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li₄Ti₅O₁₂Electrode as a High Rate Anode Material for Lithium Ion Batteries

Effects of a static inhomogeneous magnetic field acting on a laser-produced carbon plasma plume

Fractal Method for Modeling the Peculiar Dynamics of Transient Carbon Plasma Generated by Excimer Laser Ablation in Vacuum

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Characterization of a laser plasma produced from a graphite target

Cited by 6 publications

References 5 publications

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li4Ti5O12Electrode as a High Rate Anode Material for Lithium Ion Batteries

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li4Ti5O12Electrode as a High Rate Anode Material for Lithium Ion Batteries

Effects of a static inhomogeneous magnetic field acting on a laser-produced carbon plasma plume

Fractal Method for Modeling the Peculiar Dynamics of Transient Carbon Plasma Generated by Excimer Laser Ablation in Vacuum

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Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li₄Ti₅O₁₂Electrode as a High Rate Anode Material for Lithium Ion Batteries

Atmospheric Pressure Plasma Jet Irradiation of N Doped Carbon Decorated on Li₄Ti₅O₁₂Electrode as a High Rate Anode Material for Lithium Ion Batteries