Nuclear Incompressibility and the Asymmetry Term: Implications for Astrophysics and Physics with Exotic Nuclei

Journal Article · Tue Jun 01 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3455950· OSTI ID:21362121

Fujiwara, M ^[1]

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1. Research Center for Nuclear Physics, Osaka University, Mihogaoka 10-1, Ibaraki, Osaka 567-0047, Japan and Advanced Photon Science Research Center, Japan Atomic Energy Agency, Kizugawa, Kyoto 619-0215 (Japan)

The compressional-mode giant resonances, the isoscalar giant monopole resonance (GMR) and the isoscalar giant dipole resonance (ISGDR), in various isotopes have been investigated using inelastic scattering of 400-MeV alpha-particles at extremely forward angles, including 0 deg. Recently, the centroid energies of the giant monopole resonance (GMR) in the Sn isotope region are found to be significantly lower than the theoretical predictions. In addition, based on the GMR results, the asymmetry-term in the nuclear incompressibility has been determined as K{sub t}au = -550+-100 MeV. Constraints on interactions employed in nuclear structure calculations are discussed on the basis of the experimentally values for K{sub i}nfinity and K{sub t}au. The combination of these two values gives stringent constraints on the interactions used for nuclear structure calculations and for formations of equation of state (EOS) of nuclear matter. A short review of the current status of the experimental studies on the compressional-mode giant resonances is given, and a possible new experiment for astrophysics and physics with exotic nuclei is suggested.

• OSTI ID: 21362121
• Journal Information: AIP Conference Proceedings, Vol. 1238, Issue 1; Conference: 7. Tours symposium on nuclear physics and astrophysics, Kobe (Japan), 16-20 Nov 2009; Other Information: DOI: 10.1063/1.3455950; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA PARTICLES
ASTROPHYSICS
ASYMMETRY
DIPOLES
EQUATIONS OF STATE
GIANT RESONANCE
INELASTIC SCATTERING
MEV RANGE 100-1000
NUCLEAR MATTER
NUCLEAR STRUCTURE
SHELL MODELS
TIN ISOTOPES
CHARGED PARTICLES
ENERGY RANGE
EQUATIONS
IONIZING RADIATIONS
ISOTOPES
MATHEMATICAL MODELS
MATTER
MEV RANGE
MULTIPOLES
NUCLEAR MODELS
PHYSICS
RADIATIONS
RESONANCE
SCATTERING