6533b856fe1ef96bd12b2e91
RESEARCH PRODUCT
Precision Laser Spectroscopy of the Ground State Hyperfine Splitting of HydrogenlikeBi82+209
Thomas EngelPeter SeeligI. KlaftRalf GrieserReinhard NeumannBurkhard FrickeSönke SchröderG. HuberT. KuhlD. MarxLothar VölkerStefan Borneissubject
PhysicsGeneral Physics and AstronomyLaserCharged particlelaw.inventionlawElectric fieldExcited statePhysics::Atomic PhysicsAtomic physicsSpectroscopyLaser-induced fluorescenceGround stateHyperfine structuredescription
The first direct observation of a hyperfine splitting in the optical regime is reported. The wavelength of the $M1$ transition between the $F=4$ and $F=5$ hyperfine levels of the ground state of hydrogenlike $^{209}\mathrm{Bi}^{82+}$ was measured to be ${\ensuremath{\lambda}}_{0}=243.87(4)$ nm by detection of laser induced fluorescence at the heavy-ion storage ring ESR at GSI. In addition, the lifetime of the laser excited $F=5$ sublevel was determined to be ${\ensuremath{\tau}}_{0}=0.351(16)$ ms. The method can be applied to a number of other nuclei and should allow a novel test of QED corrections in the previously unexplored combination of strong magnetic and electric fields in highly charged ions.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1994-10-31 | Physical Review Letters |