First results from ATLANTIS - A new collinear laser spectroscopy setup at Argonne National Laboratory

ORAL

Abstract

Neutron-rich nuclei of refractory metals below the magic number Z=50 exhibit rich phenomena such as deformation, shape coexistence, and hints of triaxiality and thus are ideal testing grounds for theories describing these collective properties. Laser spectroscopy of isotopes and isomers in this region can contribute valuable and complementary data with high precision on nuclear shapes, sizes, and electromagnetic moments.

A new collinear laser spectroscopy setup, ATLANTIS (Argonne Tandem hall LAser beamliNe for aTom and Ion Spectroscopy) was installed at the low-energy branch of the CARIBU fission source at ATLAS, which can deliver suitable beams of these refractory isotopes.

We will present the novel setup and first results, including differential rms charge radii of fifteen short-lived, neutron-rich isotopes of palladium and ruthenium as well as their electromagnetic moments.

*This work was supported by DFG – Project-Id 279384907-SFB 1245, BMBF 05P19RDFN1 and NSF Grant No. PHY-21-11185, and by the U.S. Department of Energy, Office of Nuclear Physics, under Contract No. DE-AC02-06CH11357, with resources of ANL's ATLAS facility, an Office of Science User Facility.

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Publication: "Hyperfine structure and electromagnetic moments of neutron-rich Palladium isotopes", manuscript in prep.
"Isotope shift and electromagnetic moments of neutron-rich Ruthenium isotopes", manuscript in prep.
"A new setup for Laser Spectroscopy on neutron-rich fission fragments", manuscript in prep.

Presenters

  • Bernhard Maass

    • Argonne National Laboratory

Authors

  • Bernhard Maass

    • Argonne National Laboratory

  • Alex J Brinson

    • Massachusetts Institute of Technology

  • Daniel Burdette

    • Argonne National Laboratory

  • Jason A Clark

    • Argonne National Laboratory

  • Adam J Dockery

    • Michigan State University

  • Max Horst

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Phillip Imgram

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Kristian Koenig

    • Institut für Kernphysik, Technische Universität Darmstadt
    • TU Darmstadt

  • Kei Minamisono

    • Michigan State University

  • Patrick Müller

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Peter Mueller

    • Argonne National Laboratory

  • Wilfried Nörtershäuser

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Skyy V Pineda

    • Facility for Rare Isotope Beams, Michigan State University
    • Michigan State University

  • Simon Rausch

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Laura Renth

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Brooke J Rickey

    • Michigan State University

  • Daniel Santiago-Gonzalez

    • Argonne National Laboratory

  • Guy Savard

    • Argonne National Laboratory

  • Felix Sommer

    • Institut für Kernphysik, Technische Universität Darmstadt

  • Adrian A Valverde

    • Argonne National Laboratory