electric quadrupole transition

electric quadrupole transition

[i¦lek·trik ′kwä·drə‚pōl tran′zish·ən]
(atomic physics)
A transition of an atom or molecule from one energy state to another, in which electric quadrupole radiation is emitted or absorbed.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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The electric quadrupole transition operator employed is:
The reduced electric quadrupole transition rates between [I.sub.i] [right arrow] [I.sub.f] states are given by:
Nuclear Structure of [sup.154,156]Dy Isotopes
For the 282 nm [[blank].sup.2][S.sub.1/2] [right arrow] [[blank].sup.2][D.sub.5/2] electric quadrupole transition, [v.sub.0] [approximately equal to] [10.sup.15] Hz, so that using N = 1 and [T.sub.R] = 25 ms gives [[sigma].sub.y] ([tau]) [approximately equal to] [10.sup.-15] [[tau].sup.-1/2].
Primary atomic frequency standards at NIST
The quadrupole deformation parameter [[beta].sub.2] are derived from the electric quadrupole transition probabilities B([E.sub.2]).
Structures of superdeforemed states in nuclei with A ~ 60 using two-parameter collective model
The electric quadrupole transition operator [18] employed in this study is given by:
Nuclear structure of [sup.122-134]Xe isotopes
The electric quadrupole transition operator [15] employed in this study is:
Phase transitions in even-even palladium isotopes
The electric quadrupole transition operator [16] employed in this study is given by:
Potential energy surfaces of the even-even [sup.230-238]U isotopes

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