Determination of the first ionization energy of polonium by resonance 
ionization spectroscopy – Part II: Measurement of odd-parity Rydberg states at 
CERN–ISOLDE.

Fink, Daniel; Blaum, Klaus; Fedosseev, V.N.; Marsh, B.A.; Rossel, R.E.; Rothe, S.

doi:10.1016/j.sab.2018.08.004

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Determination of the first ionization energy of polonium by resonance ionization spectroscopy – Part II: Measurement of odd-parity Rydberg states at CERN–ISOLDE.

MPS-Authors

/persons/resource/persons30467

Fink, Daniel
EN–STI, CERN, Geneva 1211, Switzerland;
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Fakultät für Physik und Astronomie, Ruprecht-Karls-Universität, Heidelberg, Germany;

/persons/resource/persons30312

Blaum, Klaus
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

External Resource

https://www.sciencedirect.com/science/article/pii/S0584854718302453/pdfft?md5=1df29b1d0d95021646de2faa8872c9e7&pid=1-s2.0-S0584854718302453-main.pdf
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Fink, D., Blaum, K., Fedosseev, V., Marsh, B., Rossel, R., & Rothe, S. (2019). Determination of the first ionization energy of polonium by resonance ionization spectroscopy – Part II: Measurement of odd-parity Rydberg states at CERN–ISOLDE. Spectrochimica Acta Part B: Atomic Spectroscopy, 151, 72-82. doi:10.1016/j.sab.2018.08.004.

Cite as: https://hdl.handle.net/21.11116/0000-0003-2761-4

Abstract

Polonium (Po) is one of the rarest elements in Earth's crust. None of its isotopes are stable and sufficient amounts for systematic experimental studies of its most fundamental properties are only available by artificial production. At the radioactive ion beam facility ISOLDE at CERN, ²⁰⁸Po was produced by proton-induced spallation of uranium. Using the technique of in-source Resonance Ionization Spectroscopy the ionization threshold was probed with a tunable dye laser. A spectrum of 110 previously undocumented odd-parity Rydberg states was observed. Applying the Rydberg formalism to the data enabled the determination of the first ionization energy of polonium as 67896.310(14)(30) cm⁻¹ or 8.4180700(18)(37) eV. This is a precision improvement of more than 600 over the existing literature value. A comparison with the homologous elements sulfur, selenium and tellurium enabled the assignment of the electron configuration of the resonances found in the spectrum.