Positronium: Precision determination of the ground-state fine-structure interval Δv, and measurement of density shifts in the noble gases

Autor: M.H. Yam, P.O. Egan, V. W. Hughes, W.E. Frieze
Rok vydání: 1975
Předmět:
Zdroj: Physics Letters A. 54:412-414
ISSN: 0375-9601
DOI: 10.1016/0375-9601(75)90792-6
Popis: The positronium n = 1 fine-structure interval, Δ v , has been measured in nitrogen yielding Δv = 203.3849(12) GHz. Comparison with theory shows the need to calculate higher-order theoretical terms. The positronium density shifts in the noble gases were also measured.
Databáze: OpenAIRE