Inclusive Coulomb breakup of $^{22}$C and $^{31}$Ne

One-neutron removal cross section of $^{31}$Ne and two neutron- removal cross section of $^{22}$C on Pb and C targets were measured at about 230 MeV/nucleon at RIBF(RI-Beam Factory) at RIKEN. This experiment aims at extracting the inclusive Coulomb breakup cross sections of these nuclei to see if these nuclei can involve halo structures. The enhancement of low- energy E1 strength, called ``soft E1 excitation'' is a unique property of halo nuclei. Hence, the enhanement of Coulomb breakup cross section can be used as a direct signal for halo structuresi. This measurement was made as one of experiments of ``Day-One campaign'' using $^{48}$Ca primary beam at 345MeV/nucleon. The typical secondary-beam intensities of 5-10 cps were obtained oth for $^{22}$C and $^{31}$Ne. The result indeed showed the significant enhancement of 1n(2n) removal cross sections for $^{31}$Ne($^{22}$C). This result thus shows the occurence of soft E1 excitations, which suggests the 1n and 2n halo structures for $^{31}$Ne and $^{22}$C, respectively. We discuss also the possible shell melting in 31Ne using both nuclear and Coulomb breakup data.