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Employing a spheroidal global potential to estimate the quadrupole deformation of nuclei
Physics of Atomic Nuclei, 2005A spheroidal global shell potential is constructed on the basis of the optical model whose global parameters are extracted from experimental data on nucleon-nucleus scattering. This potential is used to estimate the quadrupole deformation of a large number of light, intermediate, and heavy nuclei in the mass-number range 10 ≲ A ≲ 240.
B. S. Ishkhanov, V. N. Orlin
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The effect of anisotropy in the potential on quadrupole-induced spectra
Chemical Physics Letters, 1991Abstract Dipole autocorrelation functions are calculated for the gas-phase N 2 Ar system using an anisotropic potential, V 0 ( r ) + V 2 ( r ) P 2 (cos γ) + V 4 ( r ) P 4 (cos γ), and two isotropic potentials, V 0 ( r ) and V 0 ( r ) + V 2 ( r ) + V 4 ( r ).
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Dynamics of cold atoms in a quadrupole magnetic trap with an orbiting potential
Journal of Experimental and Theoretical Physics, 1998We study the dynamics of atoms confined to a quadrupole magnetic trap with an orbiting potential. For typical values of the experimental parameters of the trap, the rotating magnetic field is shown to produce high-frequency modulation of atomic momenta with an amplitude comparable to the widths of the momentum distributions for the lowest oscillation ...
V. G. Minogin +2 more
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A Model Potential for Dipole and Quadrupole Transitions Induced by Electron Impact
Physica Scripta, 1985Analytical formulae for electron excitation cross sections σ and corresponding rate coefficients νσ are obtained in the Born approximation using the model multipole potential Vκ(R) = λκRκ/(R2 + R02)κ+1/2, where R0 is an effective radius. A comparison of the present results for dipole and quadrupole transitions with experimental data and other ...
V P Shevelko, E A Yukov
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Phonon-induced quadrupole potential in diamond-type semiconductors
Journal of Physics C: Solid State Physics, 1972Two models of covalent crystals, the shell model and the bond charge model, are used to calculate the quadrupole component of the valence charge distortion brought about by displacement of an atom from its equilibrium position. On the basis of the shell model it appears that the sources of the quadrupole extend over a considerable region around the ...
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Study of a quadrupole ion trap supplied with a periodic impulsional potential
International Journal of Mass Spectrometry and Ion Processes, 1991This paper shows the possibility of confining ions inside a quadrupole ion trap supplied with a periodic impulsional potential of the form V0 cosΩt/(1 − k cos2Ωt) with 0 ⩽ k < 1. This potential is very interesting because it presents large zero potential temporal zones during which it is possible to inject ions or electrons inside the trap without ...
S.M. Sadat Kiai +4 more
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Time-orbiting-potential quadrupole magnetic trap for cold atoms
Physical Review A, 1998An analytical theory of the time-orbiting-potential quadrupole magnetic trap for cold atoms is developed. It is shown that the rotating magnetic field used to create the time-averaged harmonic potential is responsible for the formation of quasienergy states of an atom in the trap.
Vladimir G. Minogin +2 more
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Quadrupole Correction: From Molecular Electrostatic Potential to Free Energies of Halogen Bonding
Journal of Chemical Theory and Computation, 2018Recently several molecular mechanics models of halogen bonding have been published. They describe the electrostatic potential anisotropy near the heavy halogen atom (known as a σ-hole) in different ways, ranging from an all-atom multipole expansion to a single positive extra-point charge.
Oleg I. Titov +2 more
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