Gamma-ray spectroscopy at the limits: first observation of rotational bands in 255Lr.
The rotational band structure of 255Lr has been investigated using advanced in-beam gamma-ray spectroscopic techniques. To date, 255Lr is the heaviest nucleus to be studied in this manner. One rotational band has been unambiguously observed and strong evidence for a second rotational structure was found. The structures are tentatively assigned to be based on the 1/2-[521] and 7/2-[514] Nilsson states, consistent with assignments from recently obtained alpha decay data. The experimental rotational band dynamic moment of inertia is used to test self-consistent mean-field calculations using the Skyrme SLy4 interaction and a density-dependent pairing force.
Ketelhut
S
S
Department of Physics, University of Jyväskylä, FIN-40014 Jyväskylä, Finland. steffen.ketelhut@phys.jyu.fi
Greenlees
P T
PT
Ackermann
D
D
Antalic
S
S
Clément
E
E
Darby
I G
IG
Dorvaux
O
O
Drouart
A
A
Eeckhaudt
S
S
Gall
B J P
BJ
Görgen
A
A
Grahn
T
T
Gray-Jones
C
C
Hauschild
K
K
Herzberg
R-D
RD
Hessberger
F P
FP
Jakobsson
U
U
Jones
G D
GD
Jones
P
P
Julin
R
R
Juutinen
S
S
Khoo
T-L
TL
Korten
W
W
Leino
M
M
Leppänen
A-P
AP
Ljungvall
J
J
Moon
S
S
Nyman
M
M
Obertelli
A
A
Pakarinen
J
J
Parr
E
E
Papadakis
P
P
Peura
P
P
Piot
J
J
Pritchard
A
A
Rahkila
P
P
Rostron
D
D
Ruotsalainen
P
P
Sandzelius
M
M
Sarén
J
J
Scholey
C
C
Sorri
J
J
Steer
A
A
Sulignano
B
B
Theisen
Ch
Ch
Uusitalo
J
J
Venhart
M
M
Zielinska
M
M
Bender
M
M
Heenen
P-H
PH