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HK: Fachverband Physik der Hadronen und Kerne
HK 30: Structure and Dynamics of Nuclei II
HK 30.4: Vortrag
Freitag, 3. September 2021, 15:15–15:30, H4
Collinear laser spectroscopy across the 56Ni doubly magic nucleus — •Sommer Felix1, König Kristian2, Rossi Dominic1, Everett Nathan2, Garand David2, de Groote Ruben3, Incorvati Anthony2, Imgram Phillip1, Kalman Colton2, Klose Andrew5, Lantis Jeremy2, Liu Yuan4, Miller Andrew2, Minamisono Kei2, Nörtershäuser Wilfried1, Pineda Skyy2, Powel Robert2, Renth Laura1, Romero-Romero Elisa4, Sumithrarachchi Chandana2, and Teigelhöfer Andrea6 — 1Technische Universität Darmstadt — 2Michigan State University — 3University of Jyväskylä — 4Oak Ridge National Laboratory — 5Augustana University — 6TRIUMF
We will present laser spectroscopic measurements of neutron-deficient nickel isotopes at and across the N=28 neutron shell closure. Nickel is a particularly interesting case to study nuclear shell evolution. Its isotopic chain includes the N=Z=28 doubly magic nucleus 56Ni, which is the first self-conjugated doubly magic nucleus that occurs due to a shell gap driven by the spin-orbit force and is considered to be a soft core. Using the BECOLA facility at the National Superconducting Cyclotron Laboratory at Michigan State University, we achieved the first determination of the mean-square charge radii of 54Ni, 55Ni, and 56Ni as well as an updated value of the magnetic dipole moment of 55Ni. Details of the experiment and results will be discussed.