Single-electron excitation and transfer in collisions of alkali-metal and oxygen atoms

1974 ◽  
Vol 9 (6) ◽  
pp. 2532-2544 ◽  
Author(s):  
R. B. Vora ◽  
J. E. Turner ◽  
R. N. Compton
Keyword(s):  
Alkali Metal ◽  
Electron Excitation ◽  
Single Electron ◽  
Oxygen Atoms

On image contrast from single-electron excitation

1980 ◽  
Vol 41 (3) ◽  
pp. 417-430 ◽  
Author(s):  
G. Zanchi ◽  
J. Sevely
Keyword(s):  
Electron Excitation ◽  
Image Contrast ◽  
Single Electron

Alkalimetallformiate, V Die Kristallstruktur von Natriumformiat-Dihydrat, NaHCO2·2H2O [1] Alkali Metal Formates, V The Crystal Structure of Sodium Formate Dihydrate, NaHCO2·2H2O [1]

1994 ◽  
Vol 49 (9) ◽  
pp. 1179-1182 ◽  
Author(s):  
Kerstin Müller ◽  
Klaus-Jürgen Range ◽  
Anton M. Heyns
Keyword(s):  
Crystal Structure ◽  
Alkali Metal ◽  
Sodium Formate ◽  
Sodium Ions ◽  
Hydrogen Atoms ◽  
Orthorhombic Space Group ◽  
Bonding System ◽  
Water Oxygen ◽  
Metal Formates ◽  
Oxygen Atoms

Single crystals of sodium formate dihydrate, NaHCO2·2H2O, have been prepared from aqueous solutions of sodium formate, NaHCO2, via the trihydrate, NaHCO2-3H2O. They are orthorhombic, space group Cmca, with a = 7.070(4), b = 14.534(2), c = 8.706(2) Å and Z = 8. The structure, including the hydrogen atoms, was refined to R = 0.054, Rw = 0.065 for 479 unique reflections with I > 3 σ (I). It comprises buckled layers formed by NaO6 octahedra which are edge- and corner-sharing. The octahedral coordination of the sodium ions is achieved by two oxygen atoms from two different end-on bonded formate ions and four water oxygen atoms. The O···H distances show clearly that strong hydrogen bonds are not involved in the bonding system

scholarly journals Lifetime dynamics of plasmons in the few-atom limit

2018 ◽  
Vol 115 (37) ◽  
pp. 9134-9139 ◽  
Author(s):  
Kyle D. Chapkin ◽  
Luca Bursi ◽  
Grant J. Stec ◽  
Adam Lauchner ◽  
Nathaniel J. Hogan ◽  
...  
Keyword(s):  
Vibrational Relaxation ◽  
Visible Region ◽  
Electron Excitation ◽  
Quantum Systems ◽  
Single Electron ◽  
Quantum Limit ◽  
Excited State Lifetime ◽  
Electron Hole ◽  
Rapid Decay ◽  
Polycyclic Aromatic

Polycyclic aromatic hydrocarbon (PAH) molecules are essentially graphene in the subnanometer limit, typically consisting of 50 or fewer atoms. With the addition or removal of a single electron, these molecules can support molecular plasmon (collective) resonances in the visible region of the spectrum. Here, we probe the plasmon dynamics in these quantum systems by measuring the excited-state lifetime of three negatively charged PAH molecules: anthanthrene, benzo[ghi]perylene, and perylene. In contrast to the molecules in their neutral state, these three systems exhibit far more rapid decay dynamics due to the deexcitation of multiple electron–hole pairs through molecular plasmon “dephasing” and vibrational relaxation. This study provides a look into the distinction between collective and single-electron excitation dynamics in the purely quantum limit and introduces a conceptual framework with which to visualize molecular plasmon decay.

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