The AΣu+1 state of K2 up to the dissociation limit

Falke, Stephan; Sherstov, I.; Tiemann, E.; Lisdat, Christian

doi:10.1063/1.2375120

Cited by 30 publications

(26 citation statements)

References 35 publications

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“…Holm g re n10 [7] Gre g oire 15 [1] Volz96 [50] Wa ng 97 PRA [53] Wa ng 97 JCP [54] Fa lke 06 [75] K Holm g re n10 [7] Gre g oire 15 [1] Volz96 [50] Sim s a ria n98 [55]…”

Section: Namentioning

confidence: 99%

Analysis of Polarizability Measurements Made with Atom Interferometry

Gregoire

Brooks

Trubko

et al. 2016

Atoms

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Abstract:We present revised measurements of the static electric dipole polarizabilities of K, Rb, and Cs based on atom interferometer experiments presented in [Phys. Rev. A 2015, 92, 052513] but now re-analyzed with new calibrations for the magnitude and geometry of the applied electric field gradient. The resulting polarizability values did not change, but the uncertainties were significantly reduced. Then, we interpret several measurements of alkali metal atomic polarizabilities in terms of atomic oscillator strengths f ik , Einstein coefficients A ik , state lifetimes τ k , transition dipole matrix elements D ik , line strengths S ik , and van der Waals C 6 coefficients. Finally, we combine atom interferometer measurements of polarizabilities with independent measurements of lifetimes and C 6 values in order to quantify the residual contribution to polarizability due to all atomic transitions other than the principal ns-np J transitions for alkali metal atoms.

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“…Holm g re n10 [7] Gre g oire 15 [1] Volz96 [50] Wa ng 97 PRA [53] Wa ng 97 JCP [54] Fa lke 06 [75] K Holm g re n10 [7] Gre g oire 15 [1] Volz96 [50] Sim s a ria n98 [55]…”

Section: Namentioning

confidence: 99%

Analysis of Polarizability Measurements Made with Atom Interferometry

Gregoire

Brooks

Trubko

et al. 2016

Atoms

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“…Therefore, we employ optical pumping in a first interaction zone of the molecular beam. Laser L 1 transfers a significant amount of population to higher vibrational levels [13,24,25] of the ground state. This pumping step is achieved by an extended cavity diode laser (ECDL) at 792 nm in Littrow configuration.…”

Section: Methodsmentioning

confidence: 99%

“…These two fields will establish the Λ-type coupling scheme connecting the ground state vibrational levels v and v ′′ via the vibrational level v ′ in the excited state A 1 Σ + u . The energetic positions of the vibrational levels in the A state were investigated previously and are tabulated in [24].…”

Section: Methodsmentioning

confidence: 99%

“…In our study, we use long-range levels of the first electronically excited state A 1 Σ + u that we recently investigated [24] and for which we found indications of non-zero corrections to the BOA for levels very close to the asymptote of this state [25]. We would like to point out that BOA corrections discussed therein and in this work are not due to hyperfine coupling between different levels, since these perturbations are accounted for in the applied Hamiltonian.…”

Section: Introductionmentioning

confidence: 99%

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Potassium ground-state scattering parameters and Born-Oppenheimer potentials from molecular spectroscopy

et al. 2008

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We present precision measurements with MHz uncertainty of the energy gap between asymptotic and well bound levels in the electronic ground state X 1 Σ + g of the 39 K2 molecule. The molecules are prepared in a highly collimated particle beam and are interrogated in a Λ-type excitation scheme of optical transitions to long range levels close to the asymptote of the ground state, using the electronically excited state A 1 Σ + u as intermediate one. The transition frequencies are measured either by comparison with I2 lines or by absolute measurements using a fs-frequency comb. The determined level energies were used together with Feshbach resonances from cold collisions of 39 K and 40 K reported from other authors to fit new ground state potentials. Precise scattering lengths are determined and tests of the validity of the Born-Oppenheimer approximation for the description of cold collisions at this level of precision are performed.

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“…In comparison, our measurement of R has an uncertainty of 0.20%. State lifetimes can also be derived from molecular or photoassociation spectroscopy [17,18]. However, these spectroscopy experiments [17,18] do not distinguish between the 4p 1/2 and 4p 3/2 state lifetimes (they depend on an average) so they cannot be used to determine R nor λ zero .…”

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confidence: 99%