Nuclear matter distributions in the neutron-rich carbon isotopes 14-17C from intermediate-energy proton elastic scattering in inverse kinematics
Abstract
The absolute differential cross sections for small-angle proton elastic scattering off the nuclei 12,14-17C have been measured in inverse kinematics at energies near 700 MeV/u at GSI Darmstadt. The hydrogen-filled ionization chamber IKAR served simultaneously as a gas target and a detector for the recoil protons. The projectile scattering angles were measured with multi-wire tracking detectors. The radial nuclear matter density distributions and the root-mean-square nuclear matter radii were deduced from the measured cross sections using the Glauber multiple-scattering theory. A possible neutron halo structure in 15C, 16C and 17C is discussed. The obtained data show evidence for a halo structure in the 15C nucleus.
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