electric quadrupole


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electric quadrupole

[i¦lek·trik ′kwä·drə‚pōl]
(electricity)
A charge distribution that produces an electric field equivalent to that produced by two electric dipoles whose dipole moments have the same magnitude but point in opposite directions and which are separated from each other by a small distance.
References in periodicals archive ?
The reduced electric quadrupole transition rates between [I.sub.i] [right arrow] [I.sub.f] states are given by:
This article reviews the experimental results in the past decade to search for the chiral magnetic/vortical effects in high-energy heavy-ion collisions: evidence for the initial magnetic field and vorticity in Section 2, the observation of the electric (baryonic) charge separation in Section 3 (Section 4), and the manifestation of the electric quadrupole moment in Section 5.
In this work, transition parameters have been presented such as wavelengths, oscillator strengths, and transition probabilities (or rates) for magnetic dipole (M1) and electric quadrupole (E2) transitions of low-lying levels of the spectrum in neutral boron (B I).
In this study, the transition parameters such as wavelengths, oscillator strengths, and transition probabilities for magnetic dipole (M1) and electric quadrupole (E2) transitions of low-lying levels have been calculated using multiconfiguration Hartree-Fock method within the Breit-Pauli Hamiltonian, MCHF+BP given by Fischer et al.
Tables 2-4 display the wavelengths, [lambda]([Angstrom]), weighted oscillator strengths, gf, and transition probabilities, Aki([s.sup.-1]), for the magnetic dipole (M1) and electric quadrupole (E2) transitions for 2[s.sup.2]2p-2[s.sup.2]2p and [2s2p.sup.2]-[2s2p.sup.2].
In this work the forbidden transitions (electric quadrupole, E2, and magnetic dipole, Ml) for the transitions 2[s.sup.2]2p-2[s.sup.2]2p and [2s2p.sup.2]-[2s2p.sup.2] has been reported.
The electric quadrupole transition operator [18] employed in this study is given by:
The electric quadrupole transition operator [15] employed in this study is:
The electric quadrupole transition operator [16] employed in this study is given by:
The calculated [equations 12, 13] electric quadrupole moment [Q.sub.0] and deformation parameter [[beta].sub.2] are given in Table 4.

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