Photoionization from the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>5</mml:mn><mml:mi>p</mml:mi><mml:mi> </mml:mi><mml:msup><mml:mrow /><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:mn>3</mml:mn><mml:mo>/</mml:mo><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>state of rubidium

Nadeem, Ali; Haq, Sami Ul

doi:10.1103/physreva.83.063404

Cited by 21 publications

(19 citation statements)

References 38 publications

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“…3 are averages over many ion samples and calculated for σ I = 20.4 Mb, which is consistent with the cross section reported in Ref. [30]. With all the other parameters being experimentally calibrated, the good agreement between the data and the simulation confirms that the ion-Rydberg atom interaction is the sole mechanism responsible for the observed imaging contrast.…”

Section: Charge As Shown Insupporting

confidence: 87%

Ion Imaging via Long-Range Interaction with Rydberg Atoms

Groß

Vogt

2020

Phys. Rev. Lett.

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We demonstrate imaging of ions in an atomic gas with ion-Rydberg atom interaction induced absorption. This is made possible by utilizing a multi-photon electromagnetically induced transparency (EIT) scheme and the extremely large electric polarizability of a Rydberg state with high orbital angular momentum. We process the acquired images to obtain the distribution of ion clouds and to spectroscopically investigate the effect of the ions on the EIT resonance. Furthermore, we show that our method can be employed to image the dynamics of ions in a time resolved way. As an example, we map out the avalanche ionization of a gas of Rydberg atoms. The minimal disruption and the flexibility offered by this imaging technique make it ideally suited for the investigation of cold hybrid ion-atom systems.

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Section: Charge As Shown Insupporting

confidence: 87%

Ion Imaging via Long-Range Interaction with Rydberg Atoms

Groß

Vogt

2020

Phys. Rev. Lett.

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“…This technique has been extensively used for the measurement of photoionization cross section of excited states of various elements [39][40][41][42]. For the two-step photoionization process, the solutions of the rate equations give the following expression that describes the absolute photoionization at a particular wavelength of the ionizing laser:…”

Section: Resultsmentioning

confidence: 99%

Photoionization studies from the 3p P2 excited state of neutral lithium

et al. 2012

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In the present work, the experimentally determined oscillator strengths of the 3p 2 P → nd D 2 (16 ≤ n ≤ 43) Rydberg transitions of lithium have been reported for the first time. The experiments were performed using two dye lasers simultaneously pumped by the second harmonic (532 nm) of an Nd:YAG laser, and the vapor containment and detection system was a thermionic diode ion detector. The first frequency-doubled dye laser excites the groundstate atoms to the 3p 2 P excited state at 325.35 nm, and the second dye laser was scanned up to the first ionization threshold. The f -values of the aforementioned transitions have been determined using the threshold value of the photoionization cross section (30 4.8 Mb) from the 3p 2 P excited state. A complete picture of the oscillator strengths from n 3 to 43 has been presented, including the previously known oscillator strength and determined in this work.

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“…The schematic diagram of the atomic beam setup is shown in Fig.1, whereas the experimental setup based on the thermionic diode ion detector is described elsewhere [13][14][15]. Describing briefly, thermionic diode ion detector was a 35 cm long, 3 cm diameter and 1 mm wall thickness hollow stainless steel pipe, evacuated down to 10 -6 mbar.…”

Section: Methodsmentioning

confidence: 99%