β-delayed fission of 180Tl
J. Elseviers
,
A. N. Andreyev
,
M. Huyse
,
P. van Duppen
,
S. Antalic
,
A. Barzakh
,
N. Bree
,
T. E. Cocolios
,
V. F. Comas
,
J. Diriken
,
D. Fedorov
,
V. N. Fedosseev
,
S. Franchoo
(1)
,
L. Ghys
,
J. A. Heredia
,
O. Ivanov
,
U. K¨oster
(2)
,
B. A. Marsh
,
K. Nishio
,
R. D. Page
,
N. Patronis
,
M. D. Seliverstov
(3)
,
I. Tsekhanovich
(4)
,
P. van den Bergh
,
J. van de Walle
(5)
,
M. Venhart
,
S. Vermote
,
M. Veselsk'y
,
C. Wagemans
J. Elseviers
- Function : Author
A. N. Andreyev
- Function : Author
M. Huyse
- Function : Author
P. van Duppen
- Function : Author
S. Antalic
- Function : Author
A. Barzakh
- Function : Author
- PersonId : 763965
- ORCID : 0000-0002-2879-0169
N. Bree
- Function : Author
T. E. Cocolios
- Function : Author
V. F. Comas
- Function : Author
J. Diriken
- Function : Author
D. Fedorov
- Function : Author
V. N. Fedosseev
- Function : Author
L. Ghys
- Function : Author
J. A. Heredia
- Function : Author
O. Ivanov
- Function : Author
B. A. Marsh
- Function : Author
K. Nishio
- Function : Author
R. D. Page
- Function : Author
N. Patronis
- Function : Author
P. van den Bergh
- Function : Author
M. Venhart
- Function : Author
S. Vermote
- Function : Author
M. Veselsk'y
- Function : Author
C. Wagemans
- Function : Author
Abstract
The detailed analysis of the β-delayed fission data of 180Tl is presented. The experiment was performed by producing a pure beam of 180Tl by means of highly selective resonance laser ionization followed by mass separation with the ISOLDE (CERN, Geneva) isotope separator. A surprising asymmetric mass distribution of fission fragments from 180Hg, the daughter of 180Tl β decays, was observed. Here, the energy calibration of the silicon detectors, which is crucial for a proper determination of the fission fragments' energy and mass split, is presented and the total kinetic energy and its dependence on the mass split ratio is discussed. A more precise β-delayed fission probability PβDF(180Tl) = 3.2(2) × 10−3% was deduced.