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Updated: Jun 22, 2026

Angle-resolved Photoemission Spectroscopy At Ultra-low Temperatures
Published on: October 9, 2012
Gamma-ray spectroscopy at the limits: first observation of rotational bands in 255Lr
S Ketelhut1, P T Greenlees, D Ackermann
1Department of Physics, University of Jyväskylä, FIN-40014 Jyväskylä, Finland. steffen.ketelhut@phys.jyu.fi
Abstract:
The rotational band structure of 255Lr has been investigated using advanced in-beam gamma-ray spectroscopic techniques. To date, 255Lr is the heaviest nucleus to be studied in this manner. One rotational band has been unambiguously observed and strong evidence for a second rotational structure was found. The structures are tentatively assigned to be based on the 1/2-[521] and 7/2-[514] Nilsson states, consistent with assignments from recently obtained alpha decay data. The experimental rotational band dynamic moment of inertia is used to test self-consistent mean-field calculations using the Skyrme SLy4 interaction and a density-dependent pairing force.
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