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
Journal ArticleDOI
Jellium correction on the critical condition of cluster fission within a Liquid Drop Model
TL;DR: Jellium correction on the fissionability parameter was estimated within a Liquid Drop Model of the charged metallic cluster in this paper, and the model was used for the first time in this paper.
Journal ArticleDOI
Sodium atom on copper clusters
Book ChapterDOI
Quasiparticle Electronic Structures
TL;DR: In this paper, the energy positions of the main peaks in the spectral functions of inhomogeneous electron gases represent their quasiparticle electronic structures, and the great success of the Hedin GW approximation to the exchange-correlation energy is demonstrated for condensed matter in general.
Journal ArticleDOI
Different structures of neutral and charged sodium clusters
Guanghou Wang,Xing-bo Shu +1 more
TL;DR: In this paper, the optimal structures of small sodium clusters, both in neutral and charged state, were calculated by the Huckel approximation method, and the results showed that charged cluster Na + n and neutral cluster Na n have different stable configurations when n ⩾5, and that the calculated ionization potential agrees quite well with the recent experimental results obtained from both photo-emission and electron-spin resonance measurements.
Book ChapterDOI
Chapter 12 – industrial applications
TL;DR: In this paper, the application of monodispersed particles to industrial applications is discussed, where the authors use them to develop new productive methods such as the gel-sol method, or to extend conventional productive methods, such as controlled double-jet (CDJ) method.
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.