Bulletin of the American Physical Society
5th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 63, Number 12
Tuesday–Saturday, October 23–27, 2018; Waikoloa, Hawaii
Session MM: Nuclear Structure A=30-60
2:00 PM–4:45 PM,
Saturday, October 27, 2018
Hilton Room: Queen's 6
Chair: Adam Fritsch, Gonzaga University
Abstract ID: BAPS.2018.HAW.MM.5
Abstract: MM.00005 : Direct determination of the neutron skin thickness of 48Ca probed via proton elastic scattering and the ESPRI project*
3:00 PM–3:15 PM
(RIKEN Nishina Center)
(RIKEN Nishina Center)
Equation of state (EOS) of the nuclear matter controls the properties of not only the finite quantum system, nuclei, but also the structure of neutron stars and the dynamics of supernovas. Presently, the isospin-asymmetric term of the EOS, the symmetry energy is much less certain. The density dependent term of the symmetry energy plays very important role to form the neutron-rich matter. Therefore, it is very essential for understanding the neutron star.
The neutron skin thickness (Δrnp) is the most important parameter to understand the density dependence of the symmetry energy. It is very difficult, however, to determine Δrnp accurately due to the theoretical model ambiguities.
Proton elastic scattering is one of the best probes to extract the direct information of proton and neutron distributions. We have successfully determined the model independent neutron distributions and the Δrnp of Sn and Pb isotopes. We will report a result of Δrnp in 48Ca. Recently Δrnp in 48Ca has received much attention because the ab initio calculation including a multi-nucleon force can be applied to Ca region. This helps us to directly understand the role of the multi-nucleon force which is essential for the EOS at high density.
*This work was supported by JSPS KAKENHI Grant Number 15H05451.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.HAW.MM.5
The American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics.
1 Physics Ellipse, College Park, MD 20740-3844
Editorial Office 1 Research Road, Ridge, NY 11961-2701 (631) 591-4000
Office of Public Affairs 529 14th St NW, Suite 1050, Washington, D.C. 20045-2001 (202) 662-8700