arXiv:1108.3189 · Physical Review A

Transverse momentum transfer in atom-light scattering

Bart A. van Tiggelen, A. Nussle, Geert L. J. A. Rikken

Published Jun 26, 2013• 3 citations

Abstract

We predict a photon Hall effect in the optical cross section of atomic hydrogen, which is caused by the interference between an electric-quadrupole transition and an electric-dipole transition from the ground state to $3{D}_{3/2}$ and $3{P}_{3/2}$. This induces a magnetotransverse acceleration comparable to a fraction of $g$.

DOI: 10.1103/physreva.87.063424

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arXiv:1108.3189 · Physical Review A

Transverse momentum transfer in atom-light scattering

Bart A. van Tiggelen, A. Nussle, Geert L. J. A. Rikken

Published Jun 26, 2013• 3 citations

arXiv HTML PDF

Abstract

3{D}_{3/2}

and

3{P}_{3/2}

. This induces a magnetotransverse acceleration comparable to a fraction of

g

DOI: 10.1103/physreva.87.063424

Related papers

Photon Hall scattering from alkaline-earth-like atoms and alkali-like ions

Bart A. van Tiggelen, David Wilkowski

We investigate the possibility of observing a magneto-transverse scattering of photons from alkaline-earth-like atoms as well as alkali-like ions and provide orders of magnitude. The transverse magneto-scattering is physically induced by the interference between two possible quantum transitions of an outer electron in a S state, one dispersive electric-dipole transition to a P orbital state and a second resonant electric-quadrupole transition to a D orbital state. In contrast with previous mechanisms proposed for such an atomic photonic Hall effect, no real photons are scattered by the electric-dipole allowed transition, which increases the ratio of Hall current to background photons significantly. The main experimental challenge is to overcome the small detection threshold, with only 10−5 photons scattered per atom per second.We investigate the possibility of observing a magneto-transverse scattering of photons from alkaline-earth-like atoms as well as alkali-like ions and provide orders of magnitude. The transverse magneto-scattering is physically induced by the interference between two possible quantum transitions of an outer electron in a S state, one dispersive electric-dipole transition to a P orbital state and a second resonant electric-quadrupole transition to a D orbital state. In contrast with previous mechanisms proposed for such an atomic photonic Hall effect, no real photons are scattered by the electric-dipole allowed transition, which increases the ratio of Hall current to background photons significantly. The main experimental challenge is to overcome the small detection threshold, with only 10−5 photons scattered per atom per second.

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3{D}_{3/2}

and

3{P}_{3/2}

. This induces a magnetotransverse acceleration comparable to a fraction of

g

We report on spectroscopy of the low-lying electronic transitions in

^{224}\mathrm{Ra}^{+}

. We measured the frequencies of the $^{2}S_{1/2}\ensuremath{\leftrightarrow}^{2}P_{1/2}$ cooling transition, the $^{2}S_{1/2}\ensuremath{\leftrightarrow}^{2}D_{5/2}$ clock transition, the $^{2}D_{3/2}\ensuremath{\leftrightarrow}^{2}P_{3/2}$ electric dipole transition, and the $^{2}D_{5/2}\ensuremath{\leftrightarrow}^{2}P_{3/2}$ cleanout transition. From these measurements we calculate the frequencies of the $^{2}D_{3/2}\ensuremath{\leftrightarrow}^{2}P_{1/2}$ repump transition, the $^{2}S_{1/2}\ensuremath{\leftrightarrow}^{2}D_{3/2}$ electric quadrupole transition, and the $^{2}S_{1/2}\ensuremath{\leftrightarrow}^{2}P_{3/2}$ electric dipole transition. The ion's low charge-to-mass ratio and convenient wavelengths make

{}^{224}{\mathrm{Ra}}^{+}

a promising optical clock candidate.

A measurement of the azimuthal dependence of the angular distribution of photoelectrons from

{13}^{3}

{\mathrm{D}}_{3/2}

-state sodium atoms aligned transversely to the direction of propagation of, and parallel to the direction of linear polarization of, 532-nm ionizing laser radiation, is described. The measured distribution is I(\ensuremath{\varphi})=1+0.026(6)cos\ensuremath{\varphi} where \ensuremath{\varphi}=0 is the direction of the laser beam. This departure from the symmetry I(\ensuremath{\varphi})=const predicted for a pure electric dipole transition is represented theoretically as due to a dipole-quadrupole interference term.