https://doi.org/10.1140/epja/s10050-021-00657-8
Regular Article - Experimental Physics
Alpha-decay spectroscopy of 
Rf
1
JCLab, IN2P3-CNRS, Université Paris Saclay, 91405, Orsay, France
2
FLNR, JINR, Dubna, Russia
3
Dubna State University, Dubna, Russia
4
The Institute of Nuclear Physics, 050032, Almaty, Republic of Kazakhstan
5
CNRS, IPHC UMR 7178, Université de Strasbourg, 67000, Strasbourg, France
6
GANIL, 14076, Caen Cedex 5, France
7
Department of Nuclear Physics and Biophysics, Comenius University in Bratislava, 84248, Bratislava, Slovakia
Received:
5
July
2021
Accepted:
22
December
2021
Published online:
18
January
2022
The decay properties of states in Rf have been investigated with the detector array GABRIELA at the FLNR, Dubna. The electromagnetic decay of a new excited state in 
No has been observed. The state lies 750 keV above the ground state and is favourably populated in the alpha decay from a low-lying isomeric state in Rf. It decays to the 9/2
ground state by an M1 transition and is assigned the 11/2[725] Nilsson configuration. The presence of this state suggests a possible reinterpretation of the decay of the high-K isomer in No. Due to the favoured nature of the 
-decay the 11/2[725] Nilsson configuration is also assigned to the first excited state of Rf, lying at 74 keV.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2022
