Journal ArticleDOI
Preparation and photoionization potentials of molecules of sodium, potassium, and mixed atoms
TLDR
In this article, photoionization near the threshold allows identification of Naxx?16, Kxx?12, and NaxKyx+y?6, which is the longest contiguous series of any property as a function of cluster size.Abstract:
In supersonic nozzle beams of sodium, potassium, and Na/K molecular aggregates Mx have been investigated by several techniques based on mass spectrometry. By electron impact ionization with energy of 20 eV clusters with x≳4 are not observable. Photoionization near the threshold allows identification of Naxx?16, Kxx?12, and NaxKyx+y?6. Single photon ionization thresholds for Naxx?14 are given, this being the hitherto longest contiguous series of any property as a function of cluster size. For Kxx?8 and for 8 Na/K mixed clusters PI thresholds are similarly determined. Very accurate two photon photoionization thresholds for Na2 and K2 have been obtained. Theoretical models of metal clusters from recent publications are not able to adequately interpret the electronic properties of these particles as reflected by the ionization potentials.read more
Citations
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Journal ArticleDOI
Size dependence of inner-shell autoionization lines in mercury clusters
TL;DR: Inner shell photoionization spectra of Hg n clusters (n ⩽8) have been obtained with a molecular beam experiment using synchrotron radiation from the VUV storage ring at Orsay.
Journal ArticleDOI
Observation of electronic shell structure in large cesium oxide clusters
T. Bergmann,T. P. Martin +1 more
TL;DR: In this paper, photoionization spectra of CsnOx clusters have been recorded for 15≤n≤130 and 1≤x≤10 and a method of interpreting these spectra and a computer algorithm for their evaluation was presented.
Journal ArticleDOI
Ab initio configuration interaction study of the electronic and geometric structures of small sodium cationic clusters
TL;DR: In this article, the favorable geometries of small sodium clusters Na+n (n=3-9) were determined with the analytical gradient method in the framework of the ab initio SCF approximation.
Journal ArticleDOI
The interaction of gold clusters with methanol molecules: Infrared photodissociation of mass-selected Aun+(CH3OH)m
TL;DR: In this paper, the structural and energetic properties of the adducts formed by adsorbing methanol onto size-selected gold clusters are investigated by infrared photodissociation of trapped Aun+(CH3OH)m, n=1−10,15 and m=1-3.
Journal ArticleDOI
The adiabatic ionization potentials of the alkali dimers Na2, NaK and K2
TL;DR: In this paper, the adiabatic ionization potentials of three alkali dimers Na 2, Na 39 K and 39, 39 K 2 have been measured in supersonic alkali-metal beams using the sequential two-photon ionization method.
References
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Über die Zuordnung von Wellenfunktionen und Eigenwerten zu den Einzelnen Elektronen Eines Atoms
TL;DR: In this paper, Fock's Naherungsmethode zur Behandung des quantenmechanischen Mehrelektronenproblems aufgestellten Gleichungen werden auf etwas allgemeinerer Grundlage diskutiert.
Journal ArticleDOI
Size effect on the melting temperature of gold particles
Philippe A. Buffat,JP Borel +1 more
TL;DR: In this article, the melting points of small gold particles have been measured using a scanning electron-diffraction technique and the experimental results are quantitatively in good agreement with two phenomenological models.
Introduction to solid state physics
TL;DR: In this paper, the Hartree-Fock Approximation of many-body techniques and the Electron Gas Polarons and Electron-phonon Interaction are discussed.