Searching for universality of dineutron correlation at the surface of Borromean nuclei
A.Corsi, Y.Kubota, J. Casal, 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,, Y. Kanaya, S. Kawakami, D. Kim, Y. Kiyokawa
TL;DR
This study investigates the dineutron correlation in Borromean nuclei near the neutron dripline, finding a universal behavior at the nuclear surface through systematic knockout reaction measurements.
Contribution
It provides experimental evidence supporting the universality of dineutron formation at the surface of neutron-rich Borromean nuclei.
Findings
Largest correlation angles occur at similar intrinsic momenta across nuclei
Dineutron formation is reinforced as a universal feature in low-density environments
Results support the prediction of dineutron universality at nuclear surfaces
Abstract
The dineutron correlation is systematically studied in three different Borromean nuclei near the neutron dripline, 11Li, 14Be and 17B, via the (p, pn) knockout reaction measured at the RIBF facility in RIKEN. For the three nuclei, the correlation angle between the valence neutrons is found to be largest in the same range of intrinsic momenta, which can be associated to the nuclear surface. This result reinforces the prediction that the formation of the dineutron is universal in environments with low neutron density, such as the surface of neutron-rich Borromean nuclei.
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Taxonomy
TopicsNuclear Physics and Applications · Atomic and Subatomic Physics Research · Nuclear reactor physics and engineering