Zhelyazkova, V;
Hogan, SD;
(2016)
Preparation of circular Rydberg states in helium using the crossed-fields method.
Physical Review A
, 94
(2)
, Article 023415. 10.1103/PhysRevA.94.023415.
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Abstract
Helium atoms have been prepared in the circular |n=55,ℓ=54,mℓ=+54⟩ Rydberg state using the crossed electric and magnetic fields method. The atoms, initially traveling in pulsed supersonic beams, were photoexcited from the metastable 1s2sS13 level to the outermost, mℓ=0 Rydberg-Stark state with n=55 in the presence of a strong electric field and weak perpendicular magnetic field. Following excitation, the electric field was adiabatically switched off causing the atoms to evolve into the circular state with mℓ=+54 defined with respect to the magnetic-field quantization axis. The circular states were detected by ramped electric-field ionization along the magnetic-field axis. The dependence of the circular state production efficiency on the strength of the excitation electric field, and the electric-field switch-off time was studied, and microwave spectroscopy of the circular-to-circular |55,54,+54⟩→|56,55,+55⟩ transition at ∼38.5 GHz was performed.
| Type: | Article |
|---|---|
| Title: | Preparation of circular Rydberg states in helium using the crossed-fields method |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevA.94.023415 |
| Publisher version: | https://doi.org/10.1103/PhysRevA.94.023415 |
| Language: | English |
| Additional information: | © 2016 American Physical Society. V. Zhelyazkova and S. D. Hogan: Preparation of circular Rydberg states in helium using the crossed-fields method, in: PHYSICAL REVIEW A 94, 023415 (2016). The final publication is available at APS via https://doi.org/10.1103/PhysRevA.94.023415. |
| Keywords: | Science & Technology, Physical Sciences, Optics, Physics, Atomic, Molecular & Chemical, Physics, High Magnetic-Fields, One-Atom Maser, Quantum, Hydrogen, Photons, Beam |
| 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/1509338 |
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