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

Rayment, M. H.; Hogan, S. D.

doi:10.1039/d1cp01930a

Phys. Chem. Chem. Phys.

2021

DOI: 10.1039/d1cp01930a

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

M. H. Rayment

S. D. Hogan

Abstract: Nitric oxide (NO) molecules travelling in pulsed supersonic beams have been prepared in long-lived Rydberg-Stark states by resonance-enhanced two-colour two-photon excitation from the X 2Π1/2(v'' =0, J'' =...

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Cited by 4 publications

References 86 publications

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High-Resolution Continuous-Wave Laser Spectroscopy of Long-Lived Rydberg States in NO

Munkes,

Rayment,

Trachtmann

et al. 2024

J. Phys. Chem. Lett.

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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 false( n scriptl false) X + Σ + 1 ← H Σ + 2 ← A Σ + 2 ← X Π 3 / 2 2 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.

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High-Resolution Continuous-Wave Laser Spectroscopy of Long-Lived Rydberg States in NO

Munkes,

Rayment,

Trachtmann

et al. 2024

J. Phys. Chem. Lett.

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Effects of rotational excitation on decay rates of long-lived Rydberg states in NO

Rayment,

Hogan

2023

The Journal of Chemical Physics

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Nitric oxide (NO) molecules in pulsed supersonic beams have been excited to long-lived Rydberg-Stark states in series converging to the lowest vibrational level in the ground electronic state of NO+ with rotational quantum numbers N+ = 2, 4, and 6. The molecules in these excited states were then guided, or decelerated and trapped in a chip-based Rydberg-Stark decelerator, and detected in situ by pulsed electric field ionization. Time constants, reflecting the decay of molecules in N+ = 2 Rydberg-Stark states, with principal quantum numbers n between 38 and 44, from the electrostatic traps were measured to be ∼300μs. Molecules in Rydberg-Stark states with N+ = 4 and 6, and the same range of values of n were too short-lived to be trapped, but their decay time constants could be determined from complementary sets of delayed pulsed electric field ionization measurements to be ∼100 and ∼25 μs, respectively.

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Electrostatic trapping vibrationally excited Rydberg NO molecules

Rayment

Hogan

2022

Molecular Physics

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

Abstract: Nitric oxide (NO) molecules travelling in pulsed supersonic beams have been prepared in long-lived Rydberg-Stark states by resonance-enhanced two-colour two-photon excitation from the X 2Π1/2(v'' =0, J'' =...

Cited by 4 publications

References 86 publications

High-Resolution Continuous-Wave Laser Spectroscopy of Long-Lived Rydberg States in NO

High-Resolution Continuous-Wave Laser Spectroscopy of Long-Lived Rydberg States in NO

Effects of rotational excitation on decay rates of long-lived Rydberg states in NO

Electrostatic trapping vibrationally excited Rydberg NO molecules

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