Free Sodium-Water Clusters

Schulz, C. P.; Haugstätter, R.; Tittes, H. U.; Hertel, I. V.

doi:10.1103/physrevlett.57.1703

Cited by 121 publications

(133 citation statements)

References 21 publications

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“…The 'pick-up· [ 14,15] source consisted of a pulsed supersonic jet which contained the water or ammonia molecules and a sodium beam that intersected the supersonic jet at right angles. The sodium atoms, after undergoing several collisions, were entrained in the jet, and a small fraction of them formed clusters.…”

Section: Methodsmentioning

confidence: 99%

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ZEKE-PFI spectroscopy of 1:1 complexes of sodium with water and ammonia

Rodham

Blake

1997

Chemical Physics Letters

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ZEKE-PFI (zero kinetic energy pulsed field ionization) photoelectron spectra of the Na(H 2 0), Na(D 2 0), Na(NH 3 ), and Na(ND 3 ) complexes are reported. Spectra of all four complexes were obtained by single-photon ionization, and, for the Na(NH 3 ) and Na(ND 3 ) complexes, by two-color (I+ I') photoionization as well, with the A 2 E state serving as the intermediate resonance. Improved values for the ionization energies (IE) and intermolecular vibrational frequencies of the complexes were determined. The single-photon ZEKE-PFI spectra show transitions only between states of the same vibrational symmetry, in accord with the selection rule for allowed electronic transitions. Some of the two-color ZEKE-PFI spectra, however, show strong transitions between states of different vibrational symmetry which we attribute to vibronic coupling in the intermediate state.

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Section: Methodsmentioning

confidence: 99%

“…Indeed, the only measurements of intermolecular vibrational modes of such clusters were made by Hertel and co-workers, who determined the sodium ionmolecule stretching vibrational frequencies for the 1: 1 complexes of Na + with water and ammonia from photoionization efficiency (PIE) spectra of the neutral dimers [ 14,15].…”

Section: Introductionmentioning

confidence: 99%

ZEKE-PFI spectroscopy of 1:1 complexes of sodium with water and ammonia

Rodham

Blake

1997

Chemical Physics Letters

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“…were formed using the crossed-molecular beam technique pioneered by Hertel and co-workers [86]. A Na beam.…”

Section: R=h)mentioning

confidence: 99%

“…The technique of using crossed-molecular beams for forming van der Wads complexes was pioneered by Hertel and co-workers in their studies of Na-H20 [86]. Figure 2.3 illustrates a typical p ho toionization TOF mass spectrum.…”

Section: Crossed-molecular Beam Assemblymentioning

confidence: 99%

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Dynamics of harpooning studied by transition state spectroscopy. Part III. Li···FCH3

Hudson

Naumkin

et al. 2001

Faraday Disc.

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This manuscri pt has been reproduced from the microfilm master. UMI fi!ms the text directly from the original or copy submitted. Thus, some thesis and dissertation copies are in typewriter face, while others may be from any type of computer printer.The quality of this reproduction is dependent upon the quality of the copy submitted. Broken or indistinct print, colored or poor quality illustrations and photographs, print bleedthrough, substandard margins, and improper alignment can adversely affect reproduction.In the unlikely event that the author did not send UMI a complete manuscri pt and there are missing pages, these will be noted. Also, if unauthorized copyright material had to be removed, a note will indicate the deletion.Oversize materials (e.g., maps, drawings, charts) are reproduced by sectiaoning the original, beginning at the upper left-hand comer and continuing from left to right in equal sections with small overlaps.Photographs included in the original manuscript have been reproduced xerographically in this copy. Higher quality 6" x 9" black and white photographic prints are available for any photographs or illustrations appearing in this copy for an additional charge. Contact UMI directly to order. BeH CanadaThe author has granted a nonexclusive licence allowing the National Library of Canada to reproduce, loan, distribute or sell copies of this thesis in microform, paper or electronic formats.The author retains ownership of the copyright in this thesis. Neither the thesis nor substantial extracts fkom it may be printed or othewise reproduced without the author's permission. Your t m Vorre mlsrsnceOur fi& Notre relereme L'auteur a accorde une licence non exclusive pennettant a la Bibliotheque nationale du Canada de reproduire, prster, distribuer ou vendre des copies de cette these sous la forme de rnicrofiche/film, de reproduction sur papier ou sur format electronique.L'auteur conserve la propriete du droit d'auteur qui protege cette these. Ni la these ni des extraits substantiels de celle-ci ne doivent 6tre imprimes ou autrement reproduits sans son autorisation. The van der Waals complexes. Na-XR (X=F. C1. Br, R=CH3; and X=F. R=H), have been generated by crossing a beam of sodium with the expansion region of a supersonic jet of the appropriate halide in an inert-carrier gas. The complexes were identifled by photoionization time-of-flight mass spectrometry.Depletion of the complexes was observed following photoexcitation using a broad range of wavelengths. 711. Initial excitation of the N a chromophore within the complex is believed to be followed by charge-transfer dissociation;An experimental study of the photodepletion of Na-XR complexes has been made, and the results have been compared to recent ab initio studies of the same process. Photoexcitation of Na-XR accesses a potential-energy surface (PES) for the reaction Na*+XR+NaX+R, at a configuration intermediate between the reactants. Na*+XR, and products. NaX+R. We. therefore. den0 te the excited-state species as a transition state. TS, indica...

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UV Photoionization of Sodium‐Doped Formic Acid Clusters

2018

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The processes involved in the photoionization of sodium-doped clusters are complex, not fully understood for many systems and still strongly debated, especially because of the discrepancy between experimental results and predicted cluster structures. We have performed a study on sodium doped formic acid clusters based on UV photoionization spectroscopy and DFT/TDDFT calculations. Apart from the monomer, all the predicted structures show vertical ionization potential values higher than those obtained by the photoionization measurements. We have calculated the absorption spectra and found many Rydberg-like states near the adiabatic ionization potentials and, crucially, in the UV range where the clusters appearance energies fall. This finding supports the hypothesis of adiabatic contributions in the measured ionization potentials for these clusters.

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Free Sodium-Water Clusters

Cited by 121 publications

References 21 publications

ZEKE-PFI spectroscopy of 1:1 complexes of sodium with water and ammonia

ZEKE-PFI spectroscopy of 1:1 complexes of sodium with water and ammonia

Dynamics of harpooning studied by transition state spectroscopy. Part III. Li···FCH3

UV Photoionization of Sodium‐Doped Formic Acid Clusters

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