TY - JOUR
T1 - Scissors modes
T2 - The elusive breathing overtone
AU - Hatada, Keisuke
AU - Hayakawa, Kuniko
AU - Palumbo, Fabrizio
PY - 2013/7/8
Y1 - 2013/7/8
N2 - The two-rotor model predicts two levels above the scissors modes with degenerate intrinsic energy. They have Jπ=0+,2+ and are referred to as overtones. Their energy is below the threshold for nucleon emission, which should make them observable. The Jπ=0+ overtone, which has the structure of an isovector breathing mode, has vanishing E0 amplitude so that it cannot be directly excited, but it could be reached in the decay of the J=2+ overtone. We discuss such a process and evaluate the B(E2) strength, which turns out to be very small.
AB - The two-rotor model predicts two levels above the scissors modes with degenerate intrinsic energy. They have Jπ=0+,2+ and are referred to as overtones. Their energy is below the threshold for nucleon emission, which should make them observable. The Jπ=0+ overtone, which has the structure of an isovector breathing mode, has vanishing E0 amplitude so that it cannot be directly excited, but it could be reached in the decay of the J=2+ overtone. We discuss such a process and evaluate the B(E2) strength, which turns out to be very small.
UR - http://www.scopus.com/inward/record.url?scp=84881147863&partnerID=8YFLogxK
U2 - 10.1103/PhysRevC.88.014305
DO - 10.1103/PhysRevC.88.014305
M3 - 学術論文
AN - SCOPUS:84881147863
SN - 0556-2813
VL - 88
JO - Physical Review C - Nuclear Physics
JF - Physical Review C - Nuclear Physics
IS - 1
M1 - 014305
ER -