Many‐Electron Theory of Atoms and Molecules. V. First‐Row Atoms and Their Ions

Many‐Electron Theory of Atoms and Molecules. V. First‐Row Atoms and Their Ions

Articles you may be interested in Proof of a fundamental theorem in the many‐electron theory for atoms and molecules The correlation energies of the 1S22s2 inner cores of the first-row atoms B, C. "', Ne are found to be very different from those of the corresponding four-electron Be-like ions, B+ to Ne6+, due to the exclusion effects of the outer 2p electrons. Whereas the 2S2 correlation, E (2s...

Atoms and Molecules

An atom is a system formed by a pack of electrically charged particles Q called nucleus and N identical particles of charge q − . Molecules are systems with several nuclei which may not necessarily be identical . In almost all matter, the nuclei are conglomerates of neutrons and protons and the N remaining particles are electrons. Other atomic systems will be described in the exotic atoms section.

Molecules, Atoms, and Nuclei

Laser cooling of atoms, ions, or molecules by coherent scattering

We point out a laser cooling method for atoms, molecules, or ions at low saturation and large detuning from the particles' resonances. The moving particle modifies the field inside a cavity with a time delay characteristic of the cavity linewidth, while the field acts on the particle via the light shift. The dissipative mechanism can be interpreted as Doppler cooling based on preferential scatt...

Energies of Organic Molecules and Atoms in Density Functional Theory

In the assessment of density functional approximations for the exchangecorrelation energy, great weight is usually given to the accuracy of molecular atomization energies, or the enthalpies of formation constructed from calculated atomization energies. Here we show that a recent non-empirical functional, the meta-generalized gradient approximation of Tao, Perdew, Staroverov, and Scuseria, achie...