Lamb-shift measurement in hydrogenic phosphorus

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.48.1875· OSTI ID:6023512

Pross, H ^[1]; Budelsky, D; Kremer, L; Platte, D; von Brentano, P ^[2]; Gassen, J ^[3]; Mueller, D ^[4]; Scheuer, F ^[5]; Pape, A; Sens, J C ^[6]

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1. Bank Verlag GmbH, 5000 Koeln (Germany)
2. Institut fuer Kernphysik, Universitaet zu Koeln, 5000 Koeln 41 (Germany)
3. Crone GmbH, 4100 Duisburg (Germany)
4. Gesellschaft fuer Schwerionenforschung mbH, 6100 Darmstadt (Germany)
5. Target Systemelectronic GmbH, 5650 Solingen (Germany)
6. Centre de Recherches Nucleaires and Universite Louis Pasteur, 67037 Strasbourg Cedex (France)

The final result of a 2[ital s] [sup 2][ital S][sub 1/2--]2[ital p] [sup 2][ital P][sub 1/2] Lamb-shift measurement by the laser resonance method in hydrogenic phosphorus is reported. Metastable 2[ital s] [sup 2][ital S][sub 1/2] ions were prepared using a [beta][approx]0.08 velocity beam of [sup 31]P[sup 14+] ions obtained from the MP tandem accelerator at the Centre de Recherches Nucleaires in Strasbourg. From the metastable state the transition to the 2[ital p] [sup 2][ital P][sub 3/2] state was induced with a high-power dye laser leading to a measured transition energy of [Delta][ital E]=2.231 33(12) eV. Subtracting the well-known fine-structure splitting [Delta][ital E][sub FS]=2.314 82(2) eV, the Lamb shift is deduced to be [ital E][sub expt]([ital LS])=20 188(29) GHz. This result is compared with the theoretical value [ital E][sub theor]([ital LS])=20 254(10) GHz and with other experimental results for the Lamb shift in the region [ital Z][le]18. Finally, the utility of the Lamb-shift measurements in testing the [ital G]([ital Z][alpha]) function of the self-energy, which includes only terms in ([ital Z][alpha])[sup [ital n]], [ital n][ge]6, is discussed.

• OSTI ID: 6023512
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:3; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664400* -- Experimentally Derived Information on Atomic & Molecular Properties-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
ELECTRODYNAMICS
ENERGY
ENERGY LEVELS
EXCITED STATES
FIELD THEORIES
IONS
LAMB SHIFT
LASER SPECTROSCOPY
METASTABLE STATES
MULTICHARGED IONS
PHOSPHORUS IONS
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY
SELF-ENERGY
SPECTRAL SHIFT
SPECTROSCOPY