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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Structure, ionization potentials, dissociation channels and surface energy of sodium microclusters
TL;DR: In this article, the ground-state properties of sodium microclusters with a numberN of atoms up to 138 have been studied within the frame of density functional theory and the minimum energy geometry of a cluster of simple pseudoions was found by resorting to a solution of the Kohn-Sham equation on a three-dimensional grid based on a relaxation method and by simultaneously allowing ion relaxation via Hellman-Feynman forces.
Journal ArticleDOI
Design of an ICF plant using a nuclear-driven solid-state laser
L.-T.S. Lin,Mark A. Prelas,Z. He,John T. Bahns,William C. Stwalley,George H. Miley,M. Petra,E. Batyrbekov,Y. Shaban +8 more
TL;DR: In this article, the first observation of nuclear-excited sodium excimer emission at 436 nm in a TRIGA reactor with 815 Torr of He-3 and 60 torr of sodium vapor (at T = 924 K) is reported.
Journal ArticleDOI
Laser spectroscopy of Li3 isolated in Xe matrices, comparison with other metal triatomics
Martin Moskovits,T. Mejean +1 more
TL;DR: In this article, the laser induced resonance fluorescence (Raman) of three lithium containing species isolated in solid Xe and Kr are presented and compared with other metal triatomics such as Cu3, Ni3, Cr3 and Sc3.
Journal ArticleDOI
Path Integral Study of the Correlated Electronic States of Na4–Na6
TL;DR: In this paper, the authors used the path integral formulation of quantum mechanics to study the correlated electronic states of Na4-Na6 and found that planar structures are the most stable and there is significant vibrational amplitude at finite temperatures, indicating that the Born-Oppenheimer surface is relatively flat.
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.
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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.