Zhelyazkova, V;
Hogan, SD;
(2017)
Electrically tuned Forster resonances in collisions of NH3 with Rydberg He atoms.
Physical Review A
, 95
(4)
, Article 042710. 10.1103/PhysRevA.95.042710.
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Abstract
The effects of weak electric fields on resonant energy transfer between NH3 in the X 1 A1 ground electronic state and Rydberg He atoms in triplet states with principal quantum numbers n = 36–41 have been studied in a crossed-beam apparatus. For these values of n, electric dipole transitions between the Rydberg states that evolve adiabatically to the |ns and |np states in zero electric field can be tuned into resonance with the ground-state inversion transitions in NH3 using electric fields, with energy transfer occurring via Förster resonance. In the experiments the Rydberg He atoms, traveling in pulsed supersonic beams, were prepared by resonant two-photon excitation from the metastable 1s2s 3 S1 level and crossed an effusive beam of NH3 before being detected by state-selective pulsed-electric-field ionization. The resonant-energy-transfer process was identified by monitoring changes in the ionization signal from the |ns and |np Rydberg states for each value of n. The electric-field dependence of the experimental data is in good agreement with the results of calculations in which the resonant dipole-dipole coupling between the collision partners was accounted for. D
| Type: | Article |
|---|---|
| Title: | Electrically tuned Forster resonances in collisions of NH3 with Rydberg He atoms |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.95.042710 |
| Publisher version: | http://doi.org/10.1103/PhysRevA.95.042710 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1555869 |
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