Isospin symmetry of odd-odd mirror nuclei: identification of excited states in N=Z-2 48Mn.
Excited states have been observed in the N=Z-2 odd-odd nucleus 48Mn for the first time. Through comparison with the structure of 48V, a first high-spin study of an odd-odd mirror pair has been achieved. Differences between the T=1 analogue states in this pair have been interpreted in terms of Coulomb effects, with the aid of shell-model calculations in the full pf valence space. Unlike other mirror pairs, the energy differences have been interpreted almost entirely as due to a monopole effect associated with smooth changes in radius (or deformation) as a function of angular momentum. In addition, the large energy shift between analogue negative-parity states is interpreted in terms of the electromagnetic spin-orbit interaction in nuclei.
Bentley
M A
MA
Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom.
Chandler
C
C
Taylor
M J
MJ
Brown
J R
JR
Carpenter
M P
MP
Davids
C
C
Ekman
J
J
Freeman
S J
SJ
Garrett
P E
PE
Hammond
G
G
Janssens
R V F
RV
Lenzi
S M
SM
Lister
C J
CJ
du Rietz
R
R
Seweryniak
D
D