Fig. 6: Timing and optical scheme of the measurement procedure. | Nature Communications

Fig. 6: Timing and optical scheme of the measurement procedure.

From: High-precision electron affinity of oxygen

Fig. 6: Timing and optical scheme of the measurement procedure.The alternative text for this image may have been generated using AI.

In a the timing of the laser, attenuator, and detector is shown together with a real-time example of the neutral yield on the detector. Note that there is still a signal even though the detector is in a low operation mode for the first ~30 s. This is due to the high number of neutrals generated by the depletion of the ions in the excited state. In b the optical setup with the laser, calibration laser, wavelength meter, attenuator, flip mirror, and overlap with the ion beam is shown. A small fraction of the laser light used for photodetachment is picked off by a glass plate in the beam path and guided to the wavelength meter to measure the photon energy continuously during the measurement cycle.

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