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Journal Articles Physical Review Letters Year : 2012

Well-developed deformation in 42Si

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S. Takeuchi
  • Function : Author
M. Matsushita
  • Function : Author
N. Aoi
  • Function : Author
P. Doornenbal
  • Function : Author
K. Li
  • Function : Author
T. Motobayashi
  • Function : Author
H. Scheit
  • Function : Author
D. Steppenbeck
  • Function : Author
H. Wang
  • Function : Author
H. Baba
  • Function : Author
Dominique Bazin
  • Function : Author
H. Crawford
  • Function : Author
P. Fallon
  • Function : Author
R. Gernhäuser
  • Function : Author
J. Gibelin
S. Go
  • Function : Author
C. Hinke
  • Function : Author
C. R. Hoffman
  • Function : Author
R. Hughes
  • Function : Author
E. Ideguchi
  • Function : Author
D. Jenkins
  • Function : Author
N. Kobayashi
  • Function : Author
Y. Kondo
  • Function : Author
R. Krücken
T. Le Bleis
  • Function : Author
J. Lee
  • Function : Author
G. Lee
  • Function : Author
A. Matta
S. Michimasa
  • Function : Author
T. Nakamura
  • Function : Author
S. Ota
  • Function : Author
M. Petri
  • Function : Author
T. Sako
  • Function : Author
H. Sakurai
S. Shimoura
  • Function : Author
K. Steiger
  • Function : Author
K. Takahashi
  • Function : Author
M. Takechi
  • Function : Author
Y. Togano
  • Function : Author
R. Winkler
  • Function : Author
K. Yoneda
  • Function : Author

Abstract

Excited states in 38,40,42Si nuclei have been studied via in-beam gamma-ray spectroscopy with multi-nucleon removal reactions. Intense radioactive beams of 40S and 44S provided at the new facility of the RIKEN Radioactive Isotope Beam Factory enabled gamma-gamma coincidence measurements. A prominent gamma line observed with an energy of 742(8) keV in 42Si confirms the 2+ state reported in an earlier study. Among the gamma lines observed in coincidence with the 2+ -> 0+ transition, the most probable candidate for the transition from the yrast 4+ state was identified, leading to a 4+_1 energy of 2173(14) keV. The energy ratio of 2.93(5) between the 2+_1 and 4+_1 states indicates well-developed deformation in 42Si at N=28 and Z=14. Also for 38,40Si energy ratios with values of 2.09(5) and 2.56(5) were obtained. Together with the ratio for 42Si, the results show a rapid deformation development of Si isotopes from N=24 to N=28.

Dates and versions

in2p3-00721241 , version 1 (27-07-2012)

Identifiers

Cite

S. Takeuchi, M. Matsushita, N. Aoi, P. Doornenbal, K. Li, et al.. Well-developed deformation in 42Si. Physical Review Letters, 2012, 109, pp.182501. ⟨10.1103/PhysRevLett.109.182501⟩. ⟨in2p3-00721241⟩
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