Towards the Limits of Existence of Nuclear Structure: Observation and First Spectroscopy of the Isotope
Phys Rev Lett
; 123(9): 092502, 2019 Aug 30.
Article
in En
| MEDLINE
| ID: mdl-31524489
ABSTRACT
The most remote isotope from the proton dripline (by 4 atomic mass units) has been observed ^{31}K. It is unbound with respect to three-proton (3p) emission, and its decays have been detected in flight by measuring the trajectories of all decay products using microstrip detectors. The 3p emission processes have been studied by the means of angular correlations of ^{28}S+3p and the respective decay vertices. The energies of the previously unknown ground and excited states of ^{31}K have been determined. This provides its 3p separation energy value S_{3p} of -4.6(2) MeV. Upper half-life limits of 10 ps of the observed ^{31}K states have been derived from distributions of the measured decay vertices.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Phys Rev Lett
Year:
2019
Document type:
Article
Affiliation country:
Germany