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
Spectroscopy of Na3
TL;DR: In this paper, the excitation spectrum of Na3 was systematically investigated from 700 to 330 nm, and four excited states were observed, one of which exhibits fractional quantization of the vibronic pseudorotation, which constitutes the first direct verification of the adiabatic sign change theorem.
Book ChapterDOI
X-Ray Photoelectron Spectroscopy
TL;DR: The detection and energy analysis of photoelectrons produced by radiation whose energy exceeds their binding energies is the subject of an extensively used technique known as photoelectron (PE) spectroscopy as mentioned in this paper.
Journal ArticleDOI
Experimental and theoretical investigations of ionization potentials and structures of mixed sodium lithium clusters
Emmanuel Benichou,Abdul-Rahman Allouche,Monique Aubert-Frécon,Rodolphe Antoine,Michel Broyer,Ph. Dugourd,Driss Rayane +6 more
TL;DR: In this paper, the ionization potentials of Na n − m Li m clusters (3⩽ n ⩽21 and 1/1/m 2/3) generated in a supersonic beam were measured.
Journal ArticleDOI
Mixed Cu–simple metal dimers and trimers: CuLi, CuLi2, CuNa, CuK, CuBe, CuBe2, Cu2Be, CuAl, and CuAl2
TL;DR: Theoretical studies of selected diatomic and triatomic molecules containing copper and the simple metals Li, Na, K, Be, and Al are presented, with emphasis on elucidating the nature of the bonding in mixed transition metal-simple metal systems as mentioned in this paper.
References
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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.