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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Photoionization study of Hg2
TL;DR: In this article, the ionization energy of Hg 2 was determined to be 9.103 ± 0.010 eV, which allows the calculation of the dissociation energy of hg + 2 to be 1.40 ± 1.02 eV.
Journal ArticleDOI
Structures of mercury clusters in a quantum–empirical hybrid model
TL;DR: In this article, a global cluster geometry optimization on a potential energy surface provided by a recently proposed quantum mechanical-empirical hybrid method was studied with mercury clusters in the size range n======ν====== 7-14.
Journal ArticleDOI
The Hückel model for small metal clusters. III. Anion structures and HMO electron affinities
TL;DR: In this paper, the most stable structures for the alkali-like clusters M−3-M−8 are calculated within the framework of the simple Huckel model, which gives electron affinities which compare favorably with the experimental results for Cu2-Cu8.
Journal ArticleDOI
Ab Initio Studies of Properties of Small Potassium Clusters
TL;DR: In this paper, the properties of various isomers of potassium clusters containing even number of atoms ranging from 2 to 20 at the ab initio level were investigated using allelectron density functional theory with gradient corrected exchange-correlation functional.
Journal ArticleDOI
A theoretical study of alkali metal atomic clusters: From Lin to Csn (n = 2–8)
TL;DR: A theoretical study of the electronic structure of the first members of the alkali metal atomic clusters series Lin to Csn (n = 2−8) has been done in this article, where the geometries of some isomers of the neutral, positive, and negative charged clusters have been determined.
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.