Rotational bands in the proton emitter (141)Ho.
Rotational bands feeding the ground state and the isomeric state in the proton emitter (141)Ho were observed using the recoil-decay tagging method. This constitutes direct evidence that (141)Ho is deformed. A quadrupole deformation of beta(2) = 0.25(4) was deduced for the ground state from the extracted dynamic moment of inertia. Based on observed band crossings and signature splittings the 7/2(-)[523] and 1/2(+)[411] configurations were proposed for the ground state and the isomeric state, respectively. Comparison with particle-rotor calculations for beta(2) = 0.25 indicates, however, that (141)Ho may have significant hexadecapole deformation and could be triaxial in the 7/2(-)[523] ground state.
Seweryniak
D
D
Argonne National Laboratory, Illinois 60439, USA.
Woods
P J
PJ
Ressler
J J
JJ
Davids
C N
CN
Heinz
A
A
Sonzogni
A A
AA
Uusitalo
J
J
Walters
W B
WB
Caggiano
J A
JA
Carpenter
M P
MP
Cizewski
J A
JA
Davinson
T
T
Ding
K Y
KY
Fotiades
N
N
Garg
U
U
Janssens
R V
RV
Khoo
T L
TL
Kondev
F G
FG
Lauritsen
T
T
Lister
C J
CJ
Reiter
P
P
Shergur
J
J
Wiedenhöver
I
I