Effective charges in the fp shell.
Following the heavy-ion fusion-evaporation reaction 32S+24Mg at 95 MeV beam energy the lifetimes of analogue states in the T(z)=+/-1/2 A=51 mirror nuclei 51Fe and 51Mn have been measured using the Cologne plunger device coupled to the GASP gamma-ray spectrometer. The deduced B(E2;27/2(-)-->23/2(-)) values afford a unique opportunity to probe isoscalar and isovector polarization charges and to derive effective proton and neutron charges, epsilon(p) and epsilon(n), in the fp shell. A comparison between the experimental results and several different large-scale shell-model calculations yields epsilon(p) approximately 1.15e and epsilon(n) approximately 0.80e.
du Rietz
R
R
Department of Physics, Lund University, S-22100 Lund, Sweden.
Ekman
J
J
Rudolph
D
D
Fahlander
C
C
Dewald
A
A
Möller
O
O
Saha
B
B
Axiotis
M
M
Bentley
M A
MA
Chandler
C
C
de Angelis
G
G
Della Vedova
F
F
Gadea
A
A
Hammond
G
G
Lenzi
S M
SM
Mărginean
N
N
Napoli
D R
DR
Nespolo
M
M
Rusu
C
C
Tonev
D
D