Vacuum Ultraviolet and Extreme Ultraviolet Lasers: Principles, Instrumentation, and Applications

Lipson, R. H.; Dimov, S. S.; Wang, P.; Shi, Yujun; Mao, Dong; Hu, X. K.; Vanstone, J. A.

doi:10.1081/ci-100100965

Cited by 38 publications

(25 citation statements)

References 114 publications

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“…The neutral mixed cluster binding energies were decomposed into the terms representing the many-body interactions (see eqs. [5][6][7][8]) to understand the size-dependence trend found here for the incremental binding energy. Table 3. shows the average binding energies and their components calculated by DFT (without ZPE corrections) for the alcohol clusters ranging from the dimer to the pentamer.…”

Section: Discussionmentioning

confidence: 99%

“…< n E > are the n-body terms defined in eqs. [5][6][7][8]. E c corresponds to the non-additive terms.…”

Section: Discussionmentioning

confidence: 99%

“…The experimental arrangement used to record VUV laser mass spectra has been described in detail elsewhere (6). VUV laser mass spectrometry has been shown to be able to yield strong parent-ion signals for a wide variety of organic molecules having different functional groups (7).…”

Section: Methodsmentioning

confidence: 99%

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Geometries and energetics of methanol–ethanol clusters: a VUV laser/time-of-flight mass spectrometry and density functional theory study

Liu¹,

Consta²,

Ogeer³

et al. 2007

Can. J. Chem.

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Hydrogen-bonded clusters, formed above liquid methanol (Me) and ethanol (Et) mixtures of various compositions, were entrained in a supersonic jet and probed using 118 nm vacuum ultraviolet (VUV) laser single-photon ionization/time-of-flight mass spectrometry. The spectra are dominated by protonated cluster ions, formed by ionizing hydrogen-bonded Me m Et n neutrals, m = 0-4, n = 0-3, and m + n = 2-5. The structures and energetics of the neutral and ionic species were investigated using both the all-atom optimized potential for liquid state, OPLS-AA, and the density functional (DFT) calculations. The energetic factors affecting the observed cluster distributions were examined. Calculations indicate that the large change in binding energy going from trimer to tetramer can be attributed more to pair-wise interactions than to cooperativity effects.Key words: alcohol clusters, cluster formation, DFT calculations, mass spectrometry, vacuum ultraviolet laser.

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Section: Discussionmentioning

confidence: 99%

“…< n E > are the n-body terms defined in eqs. [5][6][7][8]. E c corresponds to the non-additive terms.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Geometries and energetics of methanol–ethanol clusters: a VUV laser/time-of-flight mass spectrometry and density functional theory study

Liu¹,

Consta²,

Ogeer³

et al. 2007

Can. J. Chem.

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“…The problem of cluster detection without interference from, or confusion generated by, parent neutral cluster fragmentation can be addressed in two ways: covariance mapping of the mass spectral data [32,33], and single photon ionization near threshold. In this review we focus on the latter approach, employing VUV lasers [78][79][80][81][82][83][84][85] (118 nm, 10.5 eV) and an EUV laser [35,86] (46.9 nm, 26.5 eV). Some studies of emission [67,[87][88][89][90], photoelectron [91][92][93][94][95], and vibrational [96,97] spectroscopies have been employed for the detailed characterization of small cluster structure and electronic states.…”

Section: Experimental Identification and Spectroscopy Of Neutral Metamentioning

confidence: 99%

Gas phase chemistry of neutral metal clusters: Distribution, reactivity and catalysis

Yin

Bernstein

2012

International Journal of Mass Spectrometry

164

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“…To ionize most typical flame intermediates with three or more heavy atoms and most radicals, energies of 6-11 eV are typically required. Most commonly tunable vacuum-ultraviolet (VUV) laser light is generated by two-photon resonance-enhanced sum and difference-frequency mixing of dye laser radiation in rare gases and metal vapors as nonlinear media [90][91][92][93]. A very convenient source of 10.5 eV photons is frequency tripling in xenon of the 355-nm third harmonic of Nd:YAG lasers [94,95].…”

Section: Ionization Processesmentioning

confidence: 99%

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

Hansen

Cool

Westmoreland

et al. 2009

Progress in Energy and Combustion Science

329

261

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a b s t r a c tFlame-sampling molecular-beam mass spectrometry of premixed, laminar, low-pressure flat flames has been demonstrated to be an efficient tool to study combustion chemistry. In this technique, flame gases are sampled through a small opening in a quartz probe, and after formation of a molecular beam, all flame species are separated using mass spectrometry. The present review focuses on critical aspects of the experimental approach including probe sampling effects, different ionization processes, and mass separation procedures. The capability for isomer-resolved flame species measurements, achievable by employing tunable vacuum-ultraviolet radiation for single-photon ionization, has greatly benefited flame-sampling molecular-beam mass spectrometry. This review also offers an overview of recent combustion chemistry studies of flames fueled by hydrocarbons and oxygenates. The identity of a variety of intermediates in hydrocarbon flames, including resonantly stabilized radicals and closed-shell intermediates, is described, thus establishing a more detailed understanding of the fundamentals of molecular-weight growth processes. Finally, molecular-beam mass-spectrometric studies of reaction paths in flames of alcohols, ethers, and esters, which have been performed to support the development and validation of kinetic models for bio-derived alternative fuels, are reviewed.

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Vacuum Ultraviolet and Extreme Ultraviolet Lasers: Principles, Instrumentation, and Applications

Cited by 38 publications

References 114 publications

Geometries and energetics of methanol–ethanol clusters: a VUV laser/time-of-flight mass spectrometry and density functional theory study

Geometries and energetics of methanol–ethanol clusters: a VUV laser/time-of-flight mass spectrometry and density functional theory study

Gas phase chemistry of neutral metal clusters: Distribution, reactivity and catalysis

Recent contributions of flame-sampling molecular-beam mass spectrometry to a fundamental understanding of combustion chemistry

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