Mean-life Measurements in He I by the Hanle Effect on High-Velocity Atoms Excited in a Gaseous Target
- 22 November 1971
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 27 (21) , 1407-1409
- https://doi.org/10.1103/physrevlett.27.1407
Abstract
Mean lives of He I are deduced from the Hanle curves for high-velocity atoms excited in a gaseous target. For long—mean-life levels we observed oscillations in agreement with a partial precession of the dipoles around the magnetic field. For the level, the Hanle curve is not perturbed by self-absorption using this method, and the measured mean life (1.8±0.1 nsec) is in good agreement with the theoretical value.
Keywords
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