Precision Microwave Spectroscopy of the Positronium n=2 Fine Structure.

We report a new measurement of the positronium (Ps) 2^{3}S_{1}→2^{3}P_{0} interval. Slow Ps atoms, optically excited to the radiatively metastable 2^{3}S_{1} level, flew through a microwave radiation field tuned to drive the transition to the short-lived 2^{3}P_{0} level, which was detected via the time spectrum of subsequent ground state Ps annihilation radiation. After accounting for Zeeman shifts we obtain a transition frequency ν_{0}=18501.02±0.61  MHz, which is not in agreement with the theoretical value of ν_{0}=18498.25±0.08  MHz.

• Publication year

  2020

• Venue

  Physical Review Letters

• Publication date

  2020-08-12

• Fields of study

  Medicine, Physics

• Identifiers
  DOI 10.1103/physrevlett.125.073002PMID 32857572
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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