https://doi.org/10.1140/epjad/i2005-06-078-0
ENAM 2004
Reaction cross-sections for stable nuclei and nucleon density distribution of proton drip-line nucleus 8B
1
Department of Physics, Osaka University, 560-0043, Osaka, Japan
2
Fukui University of Technology, 910-0034, Fukui, Japan
3
Department of Physics, Niigata University, 950-2102, Niigata, Japan
4
Department of Physics, Saitama University, 338-3570, Saitama, Japan
5
RI Center, Niigata University, 951-8510, Niigata, Japan
6
Kochi University of Technology, 782-8502, Kami, Kochi, Japan
7
RIKEN, Wako, 351-0106, Saitama, Japan
8
Ritsumeikan University Shiga, 525-8577, Japan
9
National Institute of Radiological Sciences, 263-8555, Chiba, Japan
* e-mail: ktanaka@riken.jp
Received:
2
December
2004
Accepted:
18
February
2005
Published online:
17
May
2005
The optical limit of the Glauber theory with zero-range approximation, which is successfully used at high energies to connect the nucleon density distribution with reaction cross-sections (σR), gives somewhat smaller values of σR by 10-20% at intermediate energies. We have precisely measured the σR for 12C on Be, C, and Al at 30A-200AMeV, and for 9Be on Be at 70A-100AMeV to investigate the enhancement of σR compared to the optical-limit calculation. From the enhancements, we deduced the nucleon-nucleon range as a function of energies. We deduced the density distribution of 8B analyzing the known experimental σR for 8B with an enhancement correction or with the finite range effect as a test.
PACS: 25.60.Dz Interaction and reaction cross-sections –
© Società Italiana di Fisica and Springer-Verlag, 2005