Time-Resolved Dynamics of Laser-Induced Cavitation Bubbles During Production of Ni Nanoparticles via Pulsed Laser Ablation in Different Solvents and Their Electrocatalytic Activity for Determination of Toxic Nitroaromatics

Pulsed laser ablation of TiO2 at 355 nm and 532 nm has been investigated using an angleand time-resolved quadrupole mass spectrometric technique. The major ablated species include O (m/e = 16), O2 (m/e = 32), Ti (m/e = 48), TiO (m/e = 64) and TiO2 (m/e = 80). The time-of-flight (TOF) spectra of ablated species are measured for the ionic and neutral ablated species, and they can be fitted by a Maxwell – Boltzmann (M – B) distribution with a center-of-mass velocity. The measured angular distributions of the ionic species (O+ and Ti+) and the neutral species (O and Ti) can be fitted with cos⁡nθ and a cos⁡θ + (1−a)cos⁡nθ, respectively. In addition, a continuous wave oxygen molecular beam is introduced into the ablated plume, and the enhancement of the signal intensities of TiO is observed. It implies that the ablated Ti atoms/ions species can react with ambient oxygen molecules in the gas phase. In the meanwhile, the physicochemical mechanism of pulsed laser ablation of TiO2 is discussed.

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Angle- and time-resolved mass spectrometric study on pulsed laser ablation of an La-Ca-Mn-O target

Science in China Series A Mathematics ◽

10.1007/bf02882272 ◽

1998 ◽

Vol 41 (12) ◽

pp. 1309-1314 ◽

Cited By ~ 2

Author(s):

Haijun Dang ◽

Zhenhui Han ◽

Qizong Qin

Keyword(s):

Laser Ablation ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Mass Spectrometric Study ◽

Mass Spectrometric ◽

Spectrometric Study ◽

Time Resolved

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Synthesis of Ni Nanoparticles by Pulsed Laser Ablation Method in Liquid Phase

Procedia Materials Science ◽

10.1016/j.mspro.2015.11.127 ◽

2015 ◽

Vol 11 ◽

pp. 359-363 ◽

Cited By ~ 11

Author(s):

M. Ganjali ◽

P. Vahdatkhah ◽

S.M.B. Marashi

Keyword(s):

Laser Ablation ◽

Liquid Phase ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Ni Nanoparticles ◽

Laser Ablation Method

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Specific Solvent Produces Specific Phase Ni Nanoparticles: A Pulsed Laser Ablation in Solvents

The Journal of Physical Chemistry C ◽

10.1021/jp503009a ◽

2014 ◽

Vol 118 (26) ◽

pp. 14647-14654 ◽

Cited By ~ 26

Author(s):

Hyeon Jin Jung ◽

Myong Yong Choi

Keyword(s):

Laser Ablation ◽

Pulsed Laser ◽

Pulsed Laser Ablation ◽

Ni Nanoparticles ◽

Specific Phase

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Spectrum analysis of plasma produced by pulsed laser ablation of GaAs

Journal of Plasma Physics ◽

10.1017/s002237780600448x ◽

2007 ◽

Vol 73 (2) ◽

pp. 231-239 ◽

Cited By ~ 3

Author(s):

AI HUA LIU

Keyword(s):

Laser Ablation ◽

Ambient Pressure ◽

Pulsed Laser ◽

Emission Spectra ◽

Diagnostic Technique ◽

Pulsed Laser Ablation ◽

Stark Broadening ◽

Experimental Conditions ◽

Time Resolved ◽

Excited Atoms

Abstract.A time-resolved diagnostic technique was used to investigate the emission spectra from the plasmas produced by 1.06 μm, 10 ns pulsed laser ablation of semiconductor GaAs. The characteristics of the species in plasma produced at different ambient pressure were analyzed. The full width at half maximum of the spectral line was measured and analyzed according to obtained spectra of the excited atoms; several line broadening factors were estimated according to our experimental conditions and the results indicate that the Stark broadening is the main broadening mechanism. Under the assumption of local thermodynamic equilibrium, the time evolution of electron number density was deduced from the Stark broadening measurements.

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