Determination of nuclear charge radius by extreme-ultraviolet spectroscopy of Na-like ions
We report on a method for determining the absolute nuclear charge radius of high-<a:math xmlns:a="http://www.w3.org/1998/Math/MathML"><a:mrow><a:mi>Z</a:mi></a:mrow></a:math> elements using extreme-ultraviolet spectroscopy of highly charged Na-like ions in tandem with highly accurate atomic structure calculations of transition energy differences. The application of this method has reduced the nuclear charge radius uncertainty of <b:math xmlns:b="http://www.w3.org/1998/Math/MathML"><b:mmultiscripts><b:mi>Ir</b:mi><b:mprescripts/><b:none/><b:mn>191</b:mn></b:mmultiscripts></b:math> by a factor of 8 from the currently accepted literature value, with a recently reported charge radius of 5.435(12) fm. The result reduces the charge radius uncertainty along the full Ir isotopic chain when combined with prior optical isotope shift measurements. The technique utilizes only a few million ions stored in an ion trap, which should apply to measurements with small quantities of radioactive nuclei.
Authors
- I. Angeli (ORCID: https://orcid.org/0009-0009-7031-1596)
- Aung Naing (ORCID: https://orcid.org/0000-0002-4803-8513)
- Joan Dreiling (ORCID: https://orcid.org/0000-0001-9226-203X)
- A. C. C. Villari (ORCID: https://orcid.org/0000-0003-2914-7471)
- S. A. Blundell (ORCID: https://orcid.org/0000-0002-5260-002X)
- Yuri V. Ralchenko (ORCID: https://orcid.org/0000-0003-0083-9554)
- Endre Takács (ORCID: https://orcid.org/0000-0002-2427-5362)
- Dipti Dipti (ORCID: https://orcid.org/0000-0001-6675-8509)
- J. D. Gillaspy (ORCID: https://orcid.org/0009-0004-3938-0247)
- Yang Yang (ORCID: https://orcid.org/0000-0002-0167-3245)
- H. Staiger (ORCID: https://orcid.org/0009-0000-6856-0037)
- J. N. Tan (ORCID: https://orcid.org/0000-0002-7762-022X)
- Adam Hosier (ORCID: https://orcid.org/0000-0003-2836-6605)
- Paul Szypryt (ORCID: https://orcid.org/0000-0002-0184-3419)
- G. C. O’Neil (ORCID: https://orcid.org/0000-0003-3450-2263)
- G. Gwinner (ORCID: https://orcid.org/0000-0002-6744-4365)
- A. Lapierre (ORCID: https://orcid.org/0000-0002-0870-6329)
- R. Silwal
Institutions
- U.S. National Science Foundation (US)
- National Institute of Standards and Technology (US)
- University of Debrecen (HU)
- National Institute of Standards (EG)
- Appalachian State University (US)
- Facility for Rare Isotope Beams
- University of Manitoba (CA)
- Clemson University (US)
- Université Grenoble Alpes (FR)
Publication Details
- Journal
- Physical Review Research
- Published
- 2025-02-03
- DOI
- https://doi.org/10.1103/physrevresearch.7.l012024
- Citations
- 2
- Primary Topic
- Atomic and Molecular Physics
- Type
- article
- Field-Weighted Citation Impact
- 2.49
Funders
- National Science Foundation
- U.S. Department of Energy
- National Institute of Standards and Technology
- Office of Science
- Natural Sciences and Engineering Research Council of Canada
- Nuclear Physics