| Autor: |
van Ninhuijs, Mark A.W., Beckers, Job, Luiten, O.J. |
| Přispěvatelé: |
Coherence and Quantum Technology, Elementary Processes in Gas Discharges |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Zdroj: |
Physical Review A, 106(6):063110. American Physical Society |
| ISSN: |
2469-9926 |
| Popis: |
We present microwave cavity resonance spectroscopy as a technique to determine excited-state photoionization cross sections of laser-cooled atoms. We demonstrate this technique by measuring the photoionization cross section of the 5 2P3/2(F′ = 4) excited state of 85Rb to continuum by creating an ultracold plasma inside a 5-GHz resonant microwave cavity. We find a photoionization cross section of ∼5 × 10−22 m2 for photon excess energies of 50, 100, 200, and 500 K above the ionization threshold. The measurements yield a cross section which is approximately 2 to 3 times smaller than the value provided by existing theory for the 5p excited state of 85Rb and two earlier measurements performed with other techniques for similar excess energies. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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