TY - JOUR
T1 - Three-body model calculation of the 2+ state in O 26
AU - Hagino, K.
AU - Sagawa, H.
PY - 2014/8/21
Y1 - 2014/8/21
N2 - We discuss the energy of the excited 2+ state in the unbound nucleus O26 using the three-body model of 24O+n+n. This model fully takes into account the continuum effects, as well as the dineutron correlation of the valence neutrons. The present calculation yields the energy of 1.354 MeV, which is slightly smaller than the unperturbed energy, 1.54 MeV. The energy shifts for the ground and the 2+ states with respect to the unperturbed energy suggest that 0+ and the 2+ states in O26 show a typical spectrum well described by a short-range pairing interaction acting on two valence nucleons in the same orbit.
AB - We discuss the energy of the excited 2+ state in the unbound nucleus O26 using the three-body model of 24O+n+n. This model fully takes into account the continuum effects, as well as the dineutron correlation of the valence neutrons. The present calculation yields the energy of 1.354 MeV, which is slightly smaller than the unperturbed energy, 1.54 MeV. The energy shifts for the ground and the 2+ states with respect to the unperturbed energy suggest that 0+ and the 2+ states in O26 show a typical spectrum well described by a short-range pairing interaction acting on two valence nucleons in the same orbit.
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U2 - 10.1103/PhysRevC.90.027303
DO - 10.1103/PhysRevC.90.027303
M3 - Article
AN - SCOPUS:84961289797
SN - 0556-2813
VL - 90
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 2
M1 - 027303
ER -