High-sensitivity atmospheric gas analysis based on intracavity laser detection of scattered radiation

The emission of positronium negative ions from Cs deposited W(100) surfaces has been studied. A dramatic change in the emission efficiency was observed upon coating a W(100) surface with Cs. The conversion efficiency (the fraction of incident slow positrons yielding the ions) of the W(100) target with a 2.2 × 10 14 atoms cm −2 Cs coverage, measured over a time interval of 3 × 10 3 s immediately after deposition, was found to be 1.25%, which is two orders of magnitude higher than that obtained for the clean, uncoated W(100) surface and 45 times greater than the highest efficiency reported thus far.

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Heterodyne lidar with a laser receiver

Godlevskii¹,

Гордов²,

Ponurovskii³

et al. 1986

Sov. J. Quantum Electron.

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High-sensitivity atmospheric gas analysis based on intracavity laser detection of scattered radiation

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Heterodyne lidar with a laser receiver

Heterodyne lidar with a laser receiver

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