6533b823fe1ef96bd127e2b9
RESEARCH PRODUCT
The electron affinity of astatine
David LeimbachJulia KarlsYangyang GuoRizwan AhmedJochen BallofLars BengtssonFerran Boix PamiesAnastasia BorschevskyKaterina ChrysalidisEphraim EliavDmitry FedorovValentin FedosseevOliver ForstnerNicolas GallandRonald Fernando Garcia RuizCamilo GranadosReinhard HeinkeKarl JohnstonAgota KoszorusUlli KösterMoa K. KristianssonYuan LiuBruce MarshPavel MolkanovLukáš F. PaštekaJoão Pedro RamosEric RenaultMikael ReponenAnnie Ringvall-mobergRalf Erik RosselDominik StuderAdam VernonJessica WarbinekJakob WelanderKlaus WendtShane WilkinsDag HanstorpSebastian RotheSebastian Rothesubject
Atomic Physics (physics.atom-ph)ENERGIESGeneral Physics and AstronomyElectron01 natural sciences7. Clean energyPhysics - Atomic PhysicsElectronegativityastatiinielectron affinityPhysics::Atomic Physicslcsh:SciencePhysicsMultidisciplinary010304 chemical physicsIsotopeQELECTRONEGATIVITYMultidisciplinary SciencesHalogenScience & Technology - Other Topicsddc:500Atomic physicsBASIS-SET CONVERGENCE[CHIM.RADIO]Chemical Sciences/RadiochemistryRadioactive decayChemical physicsAstrophysics::High Energy Astrophysical PhenomenaScienceComputer Science::Neural and Evolutionary ComputationOther Fields of PhysicsPOTENTIALSFOS: Physical scienceschemistry.chemical_elementphysics.atom-phGeneral Biochemistry Genetics and Molecular BiologyArticleIonElectron affinity0103 physical sciences[CHIM]Chemical Sciences010306 general physicsAstatineDETECTORScience & TechnologySTABILITYRadiochemistry500General Chemistrychemistrylcsh:Qastatinedescription
One of the most important properties influencing the chemical behavior of an element is the electron affinity (EA). Among the remaining elements with unknown EA is astatine, where one of its isotopes, 211At, is remarkably well suited for targeted radionuclide therapy of cancer. With the At− anion being involved in many aspects of current astatine labeling protocols, the knowledge of the electron affinity of this element is of prime importance. Here we report the measured value of the EA of astatine to be 2.41578(7) eV. This result is compared to state-of-the-art relativistic quantum mechanical calculations that incorporate both the Breit and the quantum electrodynamics (QED) corrections and the electron–electron correlation effects on the highest level that can be currently achieved for many-electron systems. The developed technique of laser-photodetachment spectroscopy of radioisotopes opens the path for future EA measurements of other radioelements such as polonium, and eventually super-heavy elements.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-07-30 |