High-K, t$_{1/2}$ = 1.4(1) ms, isomeric state in $^{255}$Lr
K. Hauschild
(1)
,
A. Lopez-Martens
(1)
,
A. V. Yeremin
,
O. Dorvaux
(2)
,
S. Antalic
,
A. V. Belozerov
,
Ch. Briançon
(1)
,
M. L. Chelnokov
,
V. I. Chepigin
,
D. Curien
(2)
,
B. Gall
(2)
,
A. Görgen
(3)
,
V. A. Gorshkov
,
M. Guttormsen
,
F. Hanappe
,
A. P. Kabachenko
,
F. Khalfallah
(2)
,
A. C. Larsen
,
O. N. Malyshev
,
A. Minkova
,
A. G. Popeko
,
Marc Rousseau
(2)
,
N. Rowley
(2)
,
S. Saro
,
A. V. Shutov
,
S. Siem
,
L. Stuttgè
(2)
,
A. I. Svirikhin
,
N. U. H. Syed
,
Ch. Theisen
(3)
,
M. Venhart
K. Hauschild
- Function : Author
- PersonId : 750506
- IdHAL : karl-hauschild-ijclab
- ORCID : 0000-0003-2862-2445
- IdRef : 196405564
A. Lopez-Martens
- Function : Author
- PersonId : 755144
- IdHAL : araceli-lopez-martens
- ORCID : 0000-0001-9985-6228
- IdRef : 163696829
A. V. Yeremin
- Function : Author
S. Antalic
- Function : Author
A. V. Belozerov
- Function : Author
M. L. Chelnokov
- Function : Author
V. I. Chepigin
- Function : Author
D. Curien
- Function : Author
- PersonId : 177076
- IdHAL : dominique-curien
- ORCID : 0000-0003-1314-898X
- IdRef : 03364019X
B. Gall
- Function : Author
- PersonId : 753581
- IdHAL : gall-benoit-unistra
- ORCID : 0000-0002-9858-1397
V. A. Gorshkov
- Function : Author
M. Guttormsen
- Function : Author
F. Hanappe
- Function : Author
A. P. Kabachenko
- Function : Author
A. C. Larsen
- Function : Author
O. N. Malyshev
- Function : Author
A. Minkova
- Function : Author
A. G. Popeko
- Function : Author
S. Saro
- Function : Author
A. V. Shutov
- Function : Author
S. Siem
- Function : Author
A. I. Svirikhin
- Function : Author
N. U. H. Syed
- Function : Author
Ch. Theisen
- Function : Author
- PersonId : 8104
- IdHAL : christophe-theisen
- ORCID : 0000-0002-8509-1022
- IdRef : 160554306
M. Venhart
- Function : Author
Abstract
isomeric state in 255Lr with a half-life of t1/2 = 1.4(1) ms and Ex>720-keV has been observed for the first time using the GABRIELA setup at the focal plane of the VASSILISSA separator. Based on its K-forbiddeness, the configuration of the state is most probably formed by coupling the valence proton to a two quasiparticle neutron excitation. Possible three quasiparticle configurations are discussed.