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RESEARCH PRODUCT

Electric hyperfine interaction in199Hg fluorides

S. LaubachE. KankeleitP. SchwalbachK. Hasselbach

subject

Nuclear and High Energy PhysicsMössbauer effectChemistryHalideElectronQuadrupole splittingCondensed Matter PhysicsAtomic and Molecular Physics and OpticsTetragonal crystal systemQuadrupoleAtomPhysical and Theoretical ChemistryAtomic physicsHyperfine structure

description

With the current integration technique, the Mossbauer effect on the 158 keV, 5/2−→1/2− transition in199Hg was studied using the cubic HgF2 and the tetragonal Hg2F2 as absorbers; in the latter, a quadrupole splittingeQVzz=}- 9.0(2) mm/s was observed. Electron densities were calculated with the self-consistent-charge-extended-Hueckel-molecular-orbital method and δ〈r2〉=(3.26±0.11) fm2 derived. From the quadrupole splitting and the calculation, an effective antishielding factor almost twice that of the neutral Hg atom is derived.

https://doi.org/10.1007/bf02058948