High-K, t$_{1/2}$ = 1.4(1) ms, isomeric state in $^{255}$Lr - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2008

High-K, t$_{1/2}$ = 1.4(1) ms, isomeric state in $^{255}$Lr

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
B. Gall
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
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.
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Dates and versions

in2p3-00318833 , version 1 (05-09-2008)

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K. Hauschild, A. Lopez-Martens, A. V. Yeremin, O. Dorvaux, S. Antalic, et al.. High-K, t$_{1/2}$ = 1.4(1) ms, isomeric state in $^{255}$Lr. Physical Review C, 2008, 78, pp.021302-4. ⟨10.1103/PhysRevC.78.021302⟩. ⟨in2p3-00318833⟩
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