Chapter III. Effects of Deuteron Virtual Breakup on Deuteron Elastic and Inelastic Scattering

One- and two-neutron removal reactions from19,20C with a proton target

“…Although the radius of 19 C is much larger than those of neighbors, the radius of 17 C shows no enhancement. Systematic measurements of longitudinal momentum distributions (p // ) of fragments for C isotopes, up to A=19, have been made at GANIL [4] and at RIKEN [5][6][7][8].…”

“…Via a Fourier transformation in the polar coordinate system, the momentum distribution of the fragment reflects the spatial distribution and the angular momentum of the transferred valence nucleon(s). The halo structures of 11 Li, 11 Be, 19 C etc. have been established through such observations [1].…”

“…Since some nuclei in C isotopes ( 15,17,19 C) have relatively small one-neutron separation energies (S 1n ), the halo structure for the nuclei has been investigated. Interaction cross sections (σ I ), which are defined as the sum of reaction cross section for the change of proton and/or neutron number in the incident nucleus, have been measured at relativistic energies (around 950 A MeV) for [9][10][11][12][13][14][15][16][17][18][19][20] C [3].…”

“…Systematic measurements of longitudinal momentum distributions (p // ) of fragments for C isotopes, up to A=19, have been made at GANIL [4] and at RIKEN [5][6][7][8]. Especially, at RIKEN, p // for two-neutron removal reactions have been simultaneously investigated for [15][16][17][18][19] C isotopes.…”

“…The total reaction cross sections (σ R ), which are defined by σ I plus inelastic scattering cross sections, have been measured for [15][16][17][18] C with a C target at around 80 A MeV [5,7,8] and for [18][19][20][21][22] C with a proton target at around 40 A MeV [9,10]. σ R of [18][19][20][21][22] C have been successfully analyzed by Glauber model [9,10].…”