Skip to Main content Skip to Navigation

A proton density bubble in the doubly magic $^{34}$Si nucleus

* Corresponding author
Abstract : Many properties of the atomic nucleus, such as vibrations, rotations and incompressibility, can be interpreted as due to a two component quantum liquid of protons and neutrons. Electron scattering measurements on stable nuclei demonstrate that their central densities are saturated, as for liquid drops. In exotic nuclei near the limits of mass and charge, with large imbalances in their proton and neutron numbers, the possibility of a depleted central density, or a ‘bubble’ structure, has been discussed in a recurrent manner since the 1970s. Here we report first experimental evidence that points to a depletion of the central density of protons in the short-lived nucleus $^{34}$Si. The proton-to-neutron density asymmetry in $^{34}$Si offers the possibility to place constraints on the density and isospin dependence of the spin–orbit force—on which nuclear models have disagreed for decades—and on its stabilizing effect towards limits of nuclear existence.
Keywords :
Document type :
Journal articles
Complete list of metadata

http://hal.in2p3.fr/in2p3-01387617
Contributor : Michel Lion Connect in order to contact the contributor
Submitted on : Tuesday, July 11, 2017 - 4:21:36 PM
Last modification on : Wednesday, August 25, 2021 - 11:16:02 AM
Long-term archiving on: : Wednesday, January 24, 2018 - 8:35:07 PM

Files

bubble-34Si_nature-Phys_2-wfig...
Files produced by the author(s)

Citation

A. Mutschler, A. Lemasson, O. Sorlin, D. Bazin, C. Borcea, et al.. A proton density bubble in the doubly magic $^{34}$Si nucleus. Nature Physics, Nature Publishing Group, 2017, 13 (2), pp.142-146. ⟨10.1038/NPHYS3916⟩. ⟨in2p3-01387617⟩

Metrics

Les métriques sont temporairement indisponibles