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
More filters
Book ChapterDOI
Ab Initio Configuration Interaction Study of Electronic and Geometric Structure of Alkali Metal Clusters
TL;DR: The investigation of electronic and geometric properties of metal clusters employing quantum chemical methods is a challenging task from a theoretical point of view and represents an interesting field of applicability of the modern computational chemistry techniques.
Book ChapterDOI
Electronic shell structure in Cs-O clusters
T. Bergmann,T. P. Martin +1 more
TL;DR: In this article, anomalous ionization energies have been observed for Cs-O clusters having certain sizes and composition, namely Cs2n+zOn with z = 8, 18, 34, 58 and 92.
Journal ArticleDOI
Observation of bound-free emissions generated from Na(3p) in a reactive oxidation process
D.R. Grantier,James L. Gole +1 more
TL;DR: In this article, the chemiluminescent reaction products of the ( Na, Na 2 )+ Br halogenation system at concentrations in excess of 1012 cm−3 are considered.
Journal ArticleDOI
Hydrogen induced droplets in a dense alkali metal vapour
I.T. Iakubov,A.Ya. Polishchuk +1 more
TL;DR: In this paper, the hydrogen induced clusters in a dense lithium vapour are studied and it is shown that for temperatures T ⪆ 2400 K and hydrogen atom pressures PH 0·01 torr almost all hydrogen is present in the bound state as LigH clusters.
References
More filters
Journal ArticleDOI
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.