Evolution of two-neutrons configuration from 11Li to 13Li
P. Andr\`e, A. Corsi, A. Revel, Y. Kubota, J. Casal, K. Fossez, J., Gomez-Camacho, M. Gomez-Ramos, A. M. Moro, G. Authelet, H. Baba, C. Caesar,, D. Calvet, A. Delbart, M. Dozono, J. Feng, F. Flavigny, J.-M. Gheller, J., Gibelin, A. Giganon, A. Gillibert, K. Hasegawa, T. Isobe
TL;DR
This paper investigates the two-neutron decay mechanisms of 11Li and 13Li, revealing a transition from sequential to direct decay and showing that neutron-neutron distance increases from 11Li to 13Li.
Contribution
It introduces a combined phenomenological and microscopic three-body model to analyze decay modes and neutron configurations in lithium isotopes.
Findings
13Li decay is dominated by direct two-neutron emission.
The average neutron-neutron distance increases from 11Li to 13Li.
Sequential decay components are significant in 11Li.
Abstract
In this work we investigate the two-neutron decay of 13Li and of the excited states of 11Li populated via one-proton removal from 14Be and 12Be, respectively. A phenomenological model is used to describe the decay of 11Li and 13Li. While the first one displays important sequential components, the second one appears dominated by the direct two-neutron decay. A microscopic three-body model is used to extract information on the spatial configuration of the emitted neutrons before the decay and shows that the average distance between the neutrons increases going from 11Li to 13Li.
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Taxonomy
TopicsAtomic and Subatomic Physics Research · Nuclear Physics and Applications · Nuclear physics research studies