Munkes, Fabian;
Rayment, Matthew H;
Trachtmann, Alexander;
Anschütz, Florian;
Eder, Ettore;
Hengel, Philipp;
Schellander, Yannick;
... Kübler, Harald; + view all
(2024)
High-Resolution Continuous-Wave Laser Spectroscopy of Long-Lived Rydberg States in NO.
Journal of Physical Chemistry Letters
, 15
(40)
pp. 10171-10180.
10.1021/acs.jpclett.4c02002.
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Abstract
High-resolution continuous-wave (cw) laser spectroscopy of nitric oxide (NO) molecules has been performed to study and characterize the energy-level structure of and effects of electric fields on the high Rydberg states. The experiments were carried out with molecules flowing through a room temperature gas cell. Rydberg-state photoexcitation was implemented using the resonance enhanced (nl)X+ Σ+1←H Σ+2←A Σ+2←XΠ3/22 three-color three-photon excitation scheme. Excited molecules were detected by high-sensitivity optogalvanic methods. Detailed measurements were made of Rydberg states with principal quantum numbers n = 22 and 32 in the series converging to the lowest rotational and vibrational state of the NO+ cation. The experimental data were compared with the results of numerical calculations which provided insight into the orbital angular momentum character of the intermediate H 2Σ+ state, improved determinations of the nf and ng quantum defects, a bound on the magnitude of the nh quantum defect, and information on the decay rates of the nf and ng Rydberg states. These measurements represent a step-change in laser spectroscopic studies of high Rydberg states in small atmospheric molecules. They open opportunities for more detailed studies of slow decay processes of Rydberg NO molecules confined in electrostatic traps, the synthesis of ultralong range Rydberg bimolecules, and the development of optical methods for trace gas detection.
| Type: | Article |
|---|---|
| Title: | High-Resolution Continuous-Wave Laser Spectroscopy of Long-Lived Rydberg States in NO |
| Location: | United States |
| DOI: | 10.1021/acs.jpclett.4c02002 |
| Publisher version: | https://doi.org/10.1021/acs.jpclett.4c02002 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. 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.ucl.ac.uk/id/eprint/10199320 |
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