4th Joint Meeting of the APS Division of Nuclear Physics and the Physical Society of Japan
Volume 59, Number 10
Tuesday–Saturday, October 7–11, 2014;
Waikoloa, Hawaii
Session AA1: Plenary Session
9:00 AM–11:00 AM,
Wednesday, October 8, 2014
Room: Monarchy Ballroom
Chair: Richard G. Milner, Massachusetts Institute of Technology
Abstract ID: BAPS.2014.HAW.AA1.2
Abstract: AA1.00002 : Physics of Exotic Nuclei at RIBF
9:45 AM–10:30 AM
Preview Abstract
Abstract
Author:
Hiroyoshi Sakurai
(RIKEN Nishina Center for Accelerator-Based Science)
``Exotic nuclei'' far from the stability line are unique objects of
many-body quantum system, where ratios of neutron number to proton number
are much larger or much smaller than those of nuclei found in nature. Their
exotic properties and phenomena emerge from their large isospin asymmetry,
and even affect scenarios of nucleosynthesis in the universe.
Efforts have been made to produce and investigate such exotic nuclei at the
accelerator facilities in the world. One of the facilities, the Radioactive
Isotope Beam Factory (RIBF) facility at RIKEN, Japan has delivered intense
radioactive isotope (RI) beams since 2007. In US, the Facility for Rare
Isotope Beams is being constructed to start around 2020.
To access nuclei far from the stability line, especially neutron- rich
nuclei, the RIBF facility is highly optimized for inflight production of
fission fragments via a U beam. The Super-conducting Ring Cyclotron delivers
a 345 MeV/u U beam. The U nuclide is converted at a target to fission
fragments. An inflight separator BigRIPS was designed to collect about
50{\%} of fission fragments produced at the target and separate nuclei of
interest. The RI beams produced at BigRIPS are then delivered to several
experimental devices.
Large-scale international collaborations have been formed at three
spectrometers to conduct unique programs for the investigation of decay
properties single particle orbits, collective motions, nucleon correlation,
and the equation-of-state of asymmetric nuclear matter. Nuclear binding
energy will be measured at a newly constructed ring for the r-process path,
and charge distribution of exotic nuclei will be examined at a unique setup
of an RI target section in an electron storage ring. Ultra slow RI beams
available at a gas catcher system will be utilized for table-top and high
precision measurements.
In this talk, I would give a facility overview of RIBF, and introduce
objectives at RIBF. Special emphasis would be given to selected recent
highlights. Several coming programs would be shown and discussed, too.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2014.HAW.AA1.2