Nucleon pickup cross sections to explore nucleon momentum distributions and nuclear structure
ORAL
Abstract
Compared to the projectile fragmentation cross sections, nucleon pickup cross sections at E/A > 100 MeV have not been so well investigated neither experimentally nor theoretically. One-nucleon pickup cross sections may have rich information on, for example, nucleon momentum distribution in nuclei or nuclear structure. Therefore we measured one-nucleon pickup cross sections of 16O beam at a few 100 MeV/nucleon.
Primary beams of 16O with various energies between 100 – 300 MeV/nucleon were provided from HIMAC heavy ion synchrotron at National Institute of Radiological Sciences, Japan, for which cross sections of nucleon pickup reactions on Be target, 9Be(16O, 17F) and 9Be(16O, 17O), were measured. At the largest energy of 300 MeV/nucleon, the pickup cross sections show a large enhancement by three orders of magnitude compared to a calculation assuming a Gaussian momentum distribution with the Goldhaber-model width. From the energy dependence of these pickup cross sections, a rough estimate of the nucleon momentum distribution up to 3–4 fm–1 was deduced. This result will be discussed being compared with several other data and calculations.
Primary beams of 16O with various energies between 100 – 300 MeV/nucleon were provided from HIMAC heavy ion synchrotron at National Institute of Radiological Sciences, Japan, for which cross sections of nucleon pickup reactions on Be target, 9Be(16O, 17F) and 9Be(16O, 17O), were measured. At the largest energy of 300 MeV/nucleon, the pickup cross sections show a large enhancement by three orders of magnitude compared to a calculation assuming a Gaussian momentum distribution with the Goldhaber-model width. From the energy dependence of these pickup cross sections, a rough estimate of the nucleon momentum distribution up to 3–4 fm–1 was deduced. This result will be discussed being compared with several other data and calculations.
–
Presenters
-
Mitsunori Fukuda
- Dept. of Physics, Osaka Univ.