6533b839fe1ef96bd12a63b9
RESEARCH PRODUCT
Resonant ionization spectroscopy of autoionizing Rydberg states in cobalt and redetermination of its ionization potential
T. GottwaldKlaus WendtYuan LiuC. Mattolatsubject
Physics010308 nuclear & particles physicsPhotoionizationMolar ionization energies of the elementsCondensed Matter Physics01 natural sciencesAtomic and Molecular Physics and OpticsIon sourcesymbols.namesakeAutoionizationExcited stateIonization0103 physical sciencesPhysics::Atomic and Molecular ClustersRydberg formulasymbolsPhysics::Atomic PhysicsAtomic physicsRydberg state010306 general physicsdescription
Multi-step resonance ionization spectroscopy of cobalt has been performed using a hot-cavity laser ion source and three Ti:Sapphire lasers. The photoionization spectra revealed members of five new autoionizing Rydberg series that originate from three different lower levels of 3d74s5s h4F9/2, 3d74s4d f4G11/2, and 3d74s4d f4H13/2 and converge to the first four excited states of singly ionized Co. The analyses of the Rydberg series yield 63564.689 �� 0.036 cm-1 as the first ionization potential of Co, which is an order of magnitude more accurate than the previous estimation. Using a three-step resonance ionization scheme that employs an autoinizing Rydberg state in the last transition, we obtained an overall ionization efficiency of about 18% for Co.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2017-03-20 | Journal of Physics B: Atomic, Molecular and Optical Physics |