Observation of the Stark effect in autoionising Rydberg states of molecular hydrogen

Fielding, HH; Softley, T. P.

doi:10.1016/s0009-2614(91)85047-z

Cited by 31 publications

(17 citation statements)

References 15 publications

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“…The pure Stark effect was also studied in numerous Rydberg atoms, including the alkali and alkaline-earth metal atoms [10][11][12][13] and the rare gases [14][15][16][17] and in molecules [18][19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Rydberg states of helium in electric and magnetic fields of arbitrary relative orientation

Tkáč¹,

Žeško²,

Agner³

et al. 2016

J. Phys. B: At. Mol. Opt. Phys.

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A spectroscopic study of Rydberg states of helium (n = 30 and 45) in magnetic, electric and combined magnetic and electric fields with arbitrary relative orientations of the field vectors is presented. The emphasis is on two special cases where (i) the diamagnetic term is negligible and both paramagnetic Zeeman and Stark effects are linear (n = 30, B ≤ 120 mT and F = 0-78 V/cm), and (ii) the diamagnetic term is dominant and the Stark effect is linear (n = 45, B = 277 mT and F = 0-8 V/cm). Both cases correspond to regimes where the interactions induced by the electric and magnetic fields are much weaker than the Coulomb interaction, but much stronger than the spin-orbit interaction. The experimental spectra are compared to spectra calculated by determining the eigenvalues of the Hamiltonian matrix describing helium Rydberg states in the external fields. The spectra and the calculated energy-level diagrams in external fields reveal avoided crossings between levels of different m l values and pronounced m l-mixing effects at all angles between the electric and magnetic field vectors other than 0. These observations are discussed in the context of the development of a method to generate dense samples of cold atoms and molecules in a magnetic trap following Rydberg-Stark deceleration.

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Section: Introductionmentioning

confidence: 99%

Rydberg states of helium in electric and magnetic fields of arbitrary relative orientation

Tkáč¹,

Žeško²,

Agner³

et al. 2016

J. Phys. B: At. Mol. Opt. Phys.

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“…In an electric field F⃑ = (0, 0, F z ), the Hund's-case-(d) Hamiltonian in eqn (2) can be extended to include contributions from the Stark effect. The resulting perturbation, H (d) Stark = eF z z , has matrix elements given by, 37,65 where the integral,This perturbation leads to non-zero off diagonal couplings between states, within the same rotational series, for which Δ = ±1, i.e. , between states for which,Δ = ±1; Δ N + = 0; Δ N = 0, ±1 (not 0 → 0); Δ M N = 0.The radial integrals 〈 ν | r | ν ′′〉 on the right-hand side of eqn (15) were evaluated using the Numerov method 66 with a pure Coulomb potential.…”

Section: Stark Effect In Rydberg States Of Nomentioning

confidence: 99%

Quantum-state-dependent decay rates of electrostatically trapped Rydberg NO molecules

Rayment

Hogan

2021

Phys. Chem. Chem. Phys.

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“…To account for the vibrational and rotational degrees of freedom of the molecular ion core the basis used must be extended. For example, in the calculation of the Stark effect in Rydberg states of H 2 , a Hund's-case-(d) zerofield basis |n N + N M N , where N + is the rotational angular momentum quantum number of the H + 2 ion core, N is the total angular momentum quantum number excluding spin ( N = N + + ), and M N is the projection of N onto the electric field axis, is appropriate if vibrational channel interactions do not significantly perturb the spectra in the regions of interest [94,98,99].…”

Section: The Stark Effect In Non-hydrogenic Atoms and Moleculesmentioning

confidence: 99%

Rydberg-Stark deceleration of atoms and molecules

Hogan

2016

EPJ Techn Instrum

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The large electric dipole moments associated with highly excited Rydberg states of atoms and molecules make gas-phase samples in these states very well suited to deceleration and trapping using inhomogeneous electric fields. The methods of Rydberg-Stark deceleration with which this can be achieved are reviewed here. Using these techniques, the longitudinal motion of beams of atoms and molecules moving at speeds as high as 2500 m/s have been manipulated, with changes in kinetic energy of up to | E kin | = 1.3 × 10 −20 J (| E kin |/e = 80 meV or | E kin |/hc = 650 cm −1 ) achieved, while decelerated and trapped samples with number densities of 10 6 -10 7 cm −3 and translational temperatures of ∼ 150 mK have been prepared. Applications of these samples in areas of research at the interface between physics and physical chemistry are discussed.

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Observation of the Stark effect in autoionising Rydberg states of molecular hydrogen

Cited by 31 publications

References 15 publications

Rydberg states of helium in electric and magnetic fields of arbitrary relative orientation

Rydberg states of helium in electric and magnetic fields of arbitrary relative orientation

Quantum-state-dependent decay rates of electrostatically trapped Rydberg NO molecules

Rydberg-Stark deceleration of atoms and molecules

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