Naoya Furutachi

Towards a More Complete and Accurate Experimental Nuclear Reaction Data Library (EXFOR). International Collaboration Between Nuclear Reaction Data Centres (NRDC)

The International Network of Nuclear Reaction Data Centres (NRDC) coordinated by the IAEA Nuclear Data Section (NDS) successfully collaborates in the maintenance and development of the EXFOR library. As the scope of published data expands (e.g. to higher energy, to heavier projectile) to meet the needs of research and applications, it has become a challenging task to maintain both the completeness and accuracy of the EXFOR library. Evolution of the library highlighting recent developments is described.

Cluster structures in Oxygen isotopes

Cluster structures of 16 O, 18 Oa nd 20 O are investigated using the antisymmetrized molecular dynamics (AMD) plus generator coordinate method (GCM). We have found the K π =0 + and 0 � rotational bands of 18 O that have prominent 14 C+α cluster structure. The clustering systematics are richer in 20 O. We suggest the presence of a K π =0 + band that is a mixture of the 12 C+α+4n and 14 C+ 6 He cluster structures. K π =0 + and 0 � bands that have prominent 16 C+α cluster structure are also found.

Structures of Light Halo Nuclei

We propose here an extended framework for antisymmetrized molecular dynamics (AMD) to describe the halo structure involving core excitation. We have applied this model to He isotopes, B, and C. Binding energies and radii in He isotopes are reproduced well by the present model, and the wave functions describe the spatial extension of the density distribution. These results indicate that a reasonable description of the halo structure is achieved in this model. Furthermore, the halo structure involving core excitation is found in B and C. The cluster structure in the core plays an important role in explaining the observed electric quadrupole and magnetic dipole moments in these nuclei.

Reaction mechanism in odd-even staggering of reaction cross sections

It was recently suggested that the odd-even staggering of reaction cross sections is evidence of the pairing anti-halo effect on projectile radii. We define the dimensionless staggering parameters

Compilation of Nuclear Reaction Data from RIBF

{\ensuremath{\Gamma}}_{\mathrm{rds}}

Exotic Electromagnetic Transitions of Neutron-Rich Carbon Isotopes Studied with Extended Antisymmetrized Molecular Dynamics

and

Nuclear Reaction Data File for Astrophysics (NRDF/A) in Hokkaido University Nuclear Reaction Data Center

{\ensuremath{\Gamma}}_{\mathrm{R}}

MOLECULAR STATES AND MOLECULAR ORBITALS IN N ≠ Zsd-SHELL NUCLEI

for projectile radii and reaction cross sections, respectively, and analyze the relation between

Molecule-like structure with covalent neutrons of F isotopes toward the neutron drip line

{\ensuremath{\Gamma}}_{\mathrm{rds}}

Clustering Aspects of Highly Excited States and Neutron-Rich Nuclei

and