Well-developed deformation in 42Si
S. Takeuchi
,
M. Matsushita
,
N. Aoi
,
P. Doornenbal
,
K. Li
,
T. Motobayashi
,
H. Scheit
,
D. Steppenbeck
,
H. Wang
,
H. Baba
,
Dominique Bazin
,
L. Caceres
(1)
,
H. Crawford
,
P. Fallon
,
R. Gernhäuser
,
J. Gibelin
(2)
,
S. Go
,
S. Grévy
(1)
,
C. Hinke
,
C. R. Hoffman
,
R. Hughes
,
E. Ideguchi
,
D. Jenkins
,
N. Kobayashi
,
Y. Kondo
,
R. Krücken
,
T. Le Bleis
,
J. Lee
,
G. Lee
,
A. Matta
(3)
,
S. Michimasa
,
T. Nakamura
,
S. Ota
,
M. Petri
,
T. Sako
,
H. Sakurai
,
S. Shimoura
,
K. Steiger
,
K. Takahashi
,
M. Takechi
,
Y. Togano
,
R. Winkler
,
K. Yoneda
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
- Function : Author
- PersonId : 11987
- IdHAL : julien-gibelin
- ORCID : 0000-0001-6751-3714
- IdRef : 105736708
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
- Function : Author
- PersonId : 755533
- ORCID : 0000-0002-2755-8042
T. Le Bleis
- Function : Author
J. Lee
- Function : Author
G. Lee
- Function : Author
A. Matta
- Function : Author
- PersonId : 740837
- IdHAL : adrien-matta
- ORCID : 0000-0002-0331-1563
- IdRef : 158499972
S. Michimasa
- Function : Author
T. Nakamura
- Function : Author
S. Ota
- Function : Author
M. Petri
- Function : Author
T. Sako
- Function : Author
H. Sakurai
- Function : Author
- PersonId : 755357
- ORCID : 0000-0002-6215-4254
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.