Research output: Contribution to journal › Article › peer-review
First gamma-ray spectroscopy of Fe-49 and Ni-53 : isospin-breaking effects at large proton excess. / Brown, J. R.; Bentley, M. A.; Adrich, P.; Bazin, D.; Cook, J. M.; Diget, Christian Aaen; Gade, A.; Glasmacher, T.; Lenzi, S. M.; McDaniel, S.; Pritychenko, B.; Ratkiewicz, A.; Siwek, K.; Taylor, M. J.; Weisshaar, D.
In: Physical Review C, Vol. 80, No. 1, 011306, 06.07.2009, p. 1-5.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - First gamma-ray spectroscopy of Fe-49 and Ni-53
T2 - isospin-breaking effects at large proton excess
AU - Brown, J. R.
AU - Bentley, M. A.
AU - Adrich, P.
AU - Bazin, D.
AU - Cook, J. M.
AU - Diget, Christian Aaen
AU - Gade, A.
AU - Glasmacher, T.
AU - Lenzi, S. M.
AU - McDaniel, S.
AU - Pritychenko, B.
AU - Ratkiewicz, A.
AU - Siwek, K.
AU - Taylor, M. J.
AU - Weisshaar, D.
PY - 2009/7/6
Y1 - 2009/7/6
N2 - Isospin-breaking effects have been studied for the first time in T=32 isobaric analog states. Gamma decays have been observed from T-z=-32 nuclei, Fe-49 and Ni-53, presented here in new level schemes, and mirror energy differences have been computed following observation of analog states in V-49 and Mn-53, respectively. Shell-model calculations in the fp shell are in good agreement with the data and reveal the importance of non-Coulomb isospin-breaking effects in T=32 isobaric analog states. A two-step fragmentation process was developed to allow access to highly proton-rich nuclei and to produce each member of a mirror pair via mirrored fragmentation of a Ni-56 secondary beam. This work represents the first study using this technique and demonstrates the power of this approach for future studies of isobaric analog states in very proton-rich systems.
AB - Isospin-breaking effects have been studied for the first time in T=32 isobaric analog states. Gamma decays have been observed from T-z=-32 nuclei, Fe-49 and Ni-53, presented here in new level schemes, and mirror energy differences have been computed following observation of analog states in V-49 and Mn-53, respectively. Shell-model calculations in the fp shell are in good agreement with the data and reveal the importance of non-Coulomb isospin-breaking effects in T=32 isobaric analog states. A two-step fragmentation process was developed to allow access to highly proton-rich nuclei and to produce each member of a mirror pair via mirrored fragmentation of a Ni-56 secondary beam. This work represents the first study using this technique and demonstrates the power of this approach for future studies of isobaric analog states in very proton-rich systems.
KW - SHELL-MODEL
KW - EXOTIC NUCLEI
KW - SYMMETRY
KW - ENERGIES
KW - STATES
KW - CR-49
KW - V-49
UR - http://www.scopus.com/inward/record.url?scp=68549087159&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.80.011306
DO - 10.1103/PhysRevC.80.011306
M3 - Article
VL - 80
SP - 1
EP - 5
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
SN - 0556-2813
IS - 1
M1 - 011306
ER -