1955
DOI: 10.1103/physrev.97.380
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Theory of Hyperfine Structure

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Cited by 409 publications
(163 citation statements)
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“…When considering only up to the quadrupole interaction and neglecting the off-diagonal interactions (Schwartz 1955), the energy shift for the total angular momentum F = I + J due to the hyperfine interaction is given by…”
Section: Theory and Calculation Methodsmentioning
confidence: 99%
“…When considering only up to the quadrupole interaction and neglecting the off-diagonal interactions (Schwartz 1955), the energy shift for the total angular momentum F = I + J due to the hyperfine interaction is given by…”
Section: Theory and Calculation Methodsmentioning
confidence: 99%
“…All coils are powered by homemade current drivers having a relative drift of less than 2 · 10 −5 in 24 h. Light for the spectroscopy on the S 1/2 ↔ D 5/2 quadrupole transition is generated by a Ti:Sapphire laser stabilized to an ultra-stable high finesse reference cavity (finesse F = 410000) [13]. The free spectral range of the cavity was measured to be ∆ F SR = 1933.07309 (20) MHz by using a second independently stabilized laser and observing the beat note for the Ti:Sa laser locked to several different modes. From this measurement, also an upper limit of less than 50 Hz could be determined for the laser line width.…”
Section: Methodsmentioning
confidence: 99%
“…Here h is Planck's constant and A D 5/2 (A S 1/2 ) and B D 5/2 are the hyperfine constants describing the magnetic dipole and electric quadrupole interactions in the D 5/2 (S 1/2 ) state; higher-order multipoles [20] are not taken into account. Terms arising from second-order perturbation theory [20] are expected to shift the levels by only negligible amounts as (A D 5/2 · A D 3/2 )/∆ F S ≈ 100 Hz where ∆ F S denotes the fine-structure splitting of the D states.…”
Section: Methodsmentioning
confidence: 99%
“…where T (k) and M (k) are spherical tensor operators of rank k in the electronic and the nuclear spaces, respectively [12]. The k = 1 term of the expansion represents the magnetic dipole interaction and the k = 2 term the electric quadrupole interaction.…”
Section: Hyperfine Interaction Constantsmentioning
confidence: 99%