A composite chiral pair of rotational bands in the odd-A nucleus 135Nd.
High-spin states in 135Nd were populated with the 110Pd(30Si,5n)135Nd reaction at a 30Si bombarding energy of 133 MeV. Two DeltaI=1 bands with close excitation energies and the same parity were observed. These bands are directly linked by DeltaI=1 and DeltaI=2 transitions. The chiral nature of these two bands is confirmed by comparison with three-dimensional tilted axis cranking calculations. This is the first observation of a three-quasiparticle chiral structure and establishes the primarily geometric nature of this phenomenon.
Zhu
S
S
Physics Department, University of Notre Dame, Notre Dame, Indiana 46556, USA.
Garg
U
U
Nayak
B K
BK
Ghugre
S S
SS
Pattabiraman
N S
NS
Fossan
D B
DB
Koike
T
T
Starosta
K
K
Vaman
C
C
Janssens
R V F
RV
Chakrawarthy
R S
RS
Whitehead
M
M
Macchiavelli
A O
AO
Frauendorf
S
S