Shape coexistence in 180Hg studied through the β decay of 180Tl
J. Elseviers
,
A. N. Andreyev
(1)
,
S. Antalic
,
A. Barzakh
,
N. Bree
,
T. E. Cocolios
(1)
,
V. F. Comas
,
J. Diriken
,
D. Fedorov
,
V. N. Fedosseyev
,
S. Franchoo
(2)
,
J. A. Heredia
,
M. Huyse
(1)
,
O. Ivanov
,
U. K¨oster
(3)
,
B. A. Marsh
,
R. D. Page
,
N. Patronis
,
M. Seliverstov
,
I. Tsekhanovich
(4)
,
P. van den Bergh
,
J. van de Walle
,
P. van Duppen
(1)
,
M. Venhart
(1)
,
S. Vermote
,
M. Veselsk'y
,
C. Wagemans
J. Elseviers
- Function : Author
S. Antalic
- Function : Author
A. Barzakh
- Function : Author
- PersonId : 763965
- ORCID : 0000-0002-2879-0169
N. Bree
- Function : Author
V. F. Comas
- Function : Author
J. Diriken
- Function : Author
D. Fedorov
- Function : Author
V. N. Fedosseyev
- Function : Author
J. A. Heredia
- Function : Author
O. Ivanov
- Function : Author
B. A. Marsh
- Function : Author
R. D. Page
- Function : Author
N. Patronis
- Function : Author
M. Seliverstov
- Function : Author
P. van den Bergh
- Function : Author
J. van de Walle
- Function : Author
S. Vermote
- Function : Author
M. Veselsk'y
- Function : Author
C. Wagemans
- Function : Author
Abstract
The β + /EC decay of 180Tl and excited states in the daughter nucleus 180Hg have been investigated at the CERN On-Line Isotope Mass Separator (ISOLDE) facility. Many new low-lying energy levels were observed in 180Hg, of which the most significant are the 0+ 2 at 419.6 keV and the 2+ 2 at 601.3 keV. The former is the bandhead of an excited band in 180Hg assumed originally to be of prolate nature. From the β feeding to the different states in 180Hg, the ground-state spin of 180Tl was deduced to be (4−,5−).