Study of Stellar Reactions with Low-Energy RI Beams in Nuclear Astrophysics
S. Kubono

Nuclear reactions at low energies play a crucial role for the evolution of the universe in terms of synthesis of elements and production of energy. Thus, it is of critical importance to study such reactions to understand the evolution and various stellar phenomena, although very few of them were investigated in detail so far. Especially, under high-temperature and high-density condition, successive nuclear reactions involve various unstable nuclei. Such astrophysical reactions can be directly investigated with low-energy RI beams. CNS has successfully introduced an extensive low-energy in-flight RIB separator, called CRIB, in the RIKEN accelerator facility under CNS-RIKEN joint venture. New developments in ECR ion sources and the AVF cyclotron enhanced such activities in energy as well as the beam intensity. We may discuss recent development in nuclear astrophysics including some hot results obtained with using RI beams from CRIB. Perspectives in the field will be also discussed, especially those to be pursued at the RIBF, the RI beam factory project, which is under construction and provides the first beam in 2006 at RIKEN.

Lecture Menu :

  1. New observations of nuclei in astronomy
  2. Unstable nuclei and explosive phenomena in the universe
  3. Some topics in progress; - Solar Model - Hot pp-chain - Novae and X-Ray burst
  4. Scope; Supernovae and Heavy element synthesis

References:
[1] For general reviews of nuclear astrophysics; Proc. 7th Int. Symposium on Nuclei in the Cosmos, Nucl. Phys. A718 (2003), eds. S. Kubono, T. Kajino, I. Tanihata, and K. Nomoto.
[2] For RI beam experiments in Nuclear Astrophysics; Experimental Determination of Astrophysical Reaction Rates with Radioactive Nuclear Beams, Nucl. Phys. A693 (2001) 221, S. Kubono.
[3] About CRIB; New Low-Energy RIB Separator CRIB for Nuclear Astrophysics, Eur. Phys. J. A13 (2002) 217, S. Kubono, et al.

CISS03 Program