Abstract
The lifetime of the 5s5p 3 P 1 state of Sr has been determined with optical double resonance by observation ofrf-transitionsΔm J =±1 between Zeeman levels of the even isotopes. The measurement yields the value τ(53 P 1, Sr)=2.1(3) · 10−5 sec. A new type of narrowing of optical double resonance signals due to a time-of-flight effect of the radiating atom has been observed and compared with the theory.
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Wir danken Herrn Prof. Dr. J.Heintze für die Förderung dieser Arbeit, Herrn Dr. U.Hauser und Herrn Dr. W.Neuwirth für klärende Diskussionen über das Zeitverhalten zerfallender Zustände in Mößbauereffektexperimenten. Die Deutsche Forschungsgemeinschaft unterstützte diese Arbeit durch Sachbeihilfe, wofür wir ebenfalls danken.
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Ma, I.J., zu Putlitz, G. & Schütte, G. Lebensdauer des 5s5p 3 P 1-Zustands von Strontium. Z. Physik 208, 276–285 (1968). https://doi.org/10.1007/BF01379918
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DOI: https://doi.org/10.1007/BF01379918