Photoionization mass spectrometric study of neutral species from pulsed laser ablation of SnO2

Reid, Scott A.

doi:10.1016/s0009-2614(99)00062-7

Cited by 8 publications

(6 citation statements)

References 32 publications

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“…A diagram of the experimental apparatus was given in ref . Pulsed Nd:YAG lasers (Continuum NY-61, Surelite II) were used for ablation and ionization.…”

Section: Methodsmentioning

confidence: 99%

“…SnO and Sn 2 O 2 fragmentation to Sn and SnO, respectively, was negligible in the ionization step (<5%). 20 Relative Sn:SnO:Sn 2 O 2 abundances of 0.22:0.65:1.0 are obtained under the assumption of similar photoionization efficiencies, which is questionable. The IP of Sn 2 O 2 is unknown, while that of SnO (10.5 ( 0.5 eV) 27 lies close to the ionizing photon energy of 10.49 eV and is far above that of Sn (7.344 eV).…”

Section: S(t)mentioning

confidence: 99%

“…We recently reported the first study for an SnO 2 target, applying time-of-flight mass spectrometry (TOFMS) to analyze the neutral products of ablation at 532 nm. 20 In this paper we examine neutrals produced in 532 and 355 nm ablation of Sn and SnO 2 targets at intensities of 10 8 W cm -2 , near but below the ablation threshold for both targets. Our goal is to understand the mechanism(s) of the initial laser-target interaction and correlate the properties of PLDgenerated SnO x films with growth process variables.…”

Section: Introductionmentioning

confidence: 99%

“…The variability in results obtained for PLD-generated SnO x films illustrates a sensitivity to growth process variables and underscores the importance of characterizing the composition and energetics of products ablated from Sn-containing targets at intensities typical of deposition. We recently reported the first study for an SnO 2 target, applying time-of-flight mass spectrometry (TOFMS) to analyze the neutral products of ablation at 532 nm . In this paper we examine neutrals produced in 532 and 355 nm ablation of Sn and SnO 2 targets at intensities of 10 8 W cm -2 , near but below the ablation threshold for both targets.…”

Section: Introductionmentioning

confidence: 99%

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Pulsed Laser Ablation of Sn and SnO₂ Targets: Neutral Composition, Energetics, and Wavelength Dependence

Reid

Lamelas

2000

J. Phys. Chem. B

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We report time-of-flight mass spectrometric studies of neutral gas-phase species generated in 532 and 355 nm laser ablation of Sn and SnO2 targets at intensities of ≈108 W cm-2, below the plasma threshold. A wavelength-dependent yield of Sn:Sn x O y species is observed for the oxide target, with Sn x O x (x = 1−3) the primary products at 532 nm and atomic Sn dominant at 355 nm. Sn and Sn2 are the primary products of Sn metal ablation, and the relative Sn:Sn2 yield increases at the shorter wavelength. The speed distributions of neutrals ejected from the oxide target are well represented by unshifted time-transformed Maxwell−Boltzmann (MB) distributions, while those ejected from the metal target exhibit bimodal MB distributions. Typical most-probable speeds are (1−2) × 105 cm s-1, with peak kinetic energies (KEs) of 1−2 eV. The implications of our results for pulsed laser deposition of SnO x films will be emphasized.

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“…A diagram of the experimental apparatus was given in ref . Pulsed Nd:YAG lasers (Continuum NY-61, Surelite II) were used for ablation and ionization.…”

Section: Methodsmentioning

confidence: 99%

Section: S(t)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Pulsed Laser Ablation of Sn and SnO₂ Targets: Neutral Composition, Energetics, and Wavelength Dependence

Reid

Lamelas

2000

J. Phys. Chem. B

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“…[37][38][39][40][41][42][43][44] This technique was extended to study organic compounds using laser desorption in combination with REMPI. [37][38][39][40][41][42][43][44] This technique was extended to study organic compounds using laser desorption in combination with REMPI.…”

Section: Introductionmentioning

confidence: 99%

Laser ablation with resonance-enhanced multiphoton ionization time-of-flight mass spectrometry for determining aromatic lignin volatilization products from biomass

Mukarakate

Scheer

Robichaud

et al. 2011

Review of Scientific Instruments

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We have designed and developed a laser ablation∕pulsed sample introduction∕mass spectrometry platform that integrates pyrolysis (py) and∕or laser ablation (LA) with resonance-enhanced multiphoton ionization (REMPI) reflectron time-of-flight mass spectrometry (TOFMS). Using this apparatus, we measured lignin volatilization products of untreated biomass materials. Biomass vapors are produced by either a custom-built hot stage pyrolysis reactor or laser ablation using the third harmonic of an Nd:YAG laser (355 nm). The resulting vapors are entrained in a free jet expansion of He, then skimmed and introduced into an ionization region. One color resonance-enhanced multiphoton ionization (1+1 REMPI) is used, resulting in highly selective detection of lignin subunits from complex vapors of biomass materials. The spectra obtained by py-REMPI-TOFMS and LA-REMPI-TOFMS display high selectivity and decreased fragmentation compared to spectra recorded by an electron impact ionization molecular beam mass spectrometer (EI-MBMS). The laser ablation method demonstrates the ability to selectively isolate and volatilize specific tissues within the same plant material and then detect lignin-based products from the vapors with enhanced sensitivity. The identification of select products observed in the LA-REMPI-TOFMS experiment is confirmed by comparing their REMPI wavelength scans with that of known standards.

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Femtosecond laser time‐of‐flight mass spectrometry of labile molecular analytes: laser‐desorbed nitro‐aromatic molecules

Hankin

Tasker

Robson

et al. 2001

Rapid Comm Mass Spectrometry

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Femtosecond laser time-of-flight mass spectra of solid samples of trinitrobenzene (TNB), trinitrotoluene (TNT) and trinitrophenol (TNP) have been recorded. Desorption of the solid samples was enacted by the fourth harmonic output (266 nm) of a 5 ns Nd:YAG laser. Subsequent femtosecond post-ionisation of the plume of neutral molecules was achieved using 800 nm laser pulses of 80 fs duration. Mass spectra have been recorded for desorption laser intensities from 2-6 x 10(9) W cm(-2) with ionisation laser intensities between 2 x 10(14) and 6 x 10(15) W cm(-2). Femtosecond laser ionisation has been shown to be capable of generating precursor and characteristic high-mass fragment ions for labile nitro-aromatic molecules commonly used in high-explosive materials. This feature is critical in the future development of femtosecond laser-based analytical instruments that can be used for complex molecular identification and quantitative analysis of environmentally important labile molecules. Furthermore, a comparison of femtosecond post-ionisation mass spectra with standard 70 eV electron impact data has revealed similarities in the spectra and hence the fragmentation processes.

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Photoionization mass spectrometric study of neutral species from pulsed laser ablation of SnO2

Cited by 8 publications

References 32 publications

Pulsed Laser Ablation of Sn and SnO₂ Targets: Neutral Composition, Energetics, and Wavelength Dependence

Pulsed Laser Ablation of Sn and SnO₂ Targets: Neutral Composition, Energetics, and Wavelength Dependence

Laser ablation with resonance-enhanced multiphoton ionization time-of-flight mass spectrometry for determining aromatic lignin volatilization products from biomass

Femtosecond laser time‐of‐flight mass spectrometry of labile molecular analytes: laser‐desorbed nitro‐aromatic molecules

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Photoionization mass spectrometric study of neutral species from pulsed laser ablation of SnO2

Cited by 8 publications

References 32 publications

Pulsed Laser Ablation of Sn and SnO2 Targets: Neutral Composition, Energetics, and Wavelength Dependence

Pulsed Laser Ablation of Sn and SnO2 Targets: Neutral Composition, Energetics, and Wavelength Dependence

Laser ablation with resonance-enhanced multiphoton ionization time-of-flight mass spectrometry for determining aromatic lignin volatilization products from biomass

Femtosecond laser time‐of‐flight mass spectrometry of labile molecular analytes: laser‐desorbed nitro‐aromatic molecules

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Pulsed Laser Ablation of Sn and SnO₂ Targets: Neutral Composition, Energetics, and Wavelength Dependence

Pulsed Laser Ablation of Sn and SnO₂ Targets: Neutral Composition, Energetics, and Wavelength Dependence