Exposure of Nuclear Track Emulsion to a Mixed Beam of Relativistic   $^{12}$N, $^{10}$C, and $^7$Be Nuclei
  A nuclear track emulsion was exposed to a mixed beam of relativistic $^{12}$N, $^{10}$C, and $^7$Be nuclei having a momentum of 2 GeV/$c$ per nucleon. The beam was formed upon charge exchange processes involving $^{12}$C primary nuclei and their fragmentation. An analysis indicates that $^{10}$C nuclei are dominant in the beam and that $^{12}$N nuclei are present in it. The charge topology of relativistic fragments in the coherent dissociation of these nuclei is presented. 
R. R. Kattabekov, K. Z. Mamatkulov, D. A. Artemenkov, V. Bradnova, D.   M. Zhomurodov, M. Haiduc, S. P. Kharlamov, V. N. Kon...
nucl-ex