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Open Access Publications from the University of California

Study of non-fusion products in the Ti50+Cf249 reaction

  • Author(s): Di Nitto, A;
  • Khuyagbaatar, J;
  • Ackermann, D;
  • Andersson, LL;
  • Badura, E;
  • Block, M;
  • Brand, H;
  • Conrad, I;
  • Cox, DM;
  • Düllmann, CE;
  • Dvorak, J;
  • Eberhardt, K;
  • Ellison, PA;
  • Esker, NE;
  • Even, J;
  • Fahlander, C;
  • Forsberg, U;
  • Gates, JM;
  • Golubev, P;
  • Gothe, O;
  • Gregorich, KE;
  • Hartmann, W;
  • Herzberg, RD;
  • Heßberger, FP;
  • Hoffmann, J;
  • Hollinger, R;
  • Hübner, A;
  • Jäger, E;
  • Kindler, B;
  • Klein, S;
  • Kojouharov, I;
  • Kratz, JV;
  • Krier, J;
  • Kurz, N;
  • Lahiri, S;
  • Lommel, B;
  • Maiti, M;
  • Mändl, R;
  • Merchán, E;
  • Minami, S;
  • Mistry, AK;
  • Mokry, C;
  • Nitsche, H;
  • Omtvedt, JP;
  • Pang, GK;
  • Renisch, D;
  • Rudolph, D;
  • Runke, J;
  • Sarmiento, LG;
  • Schädel, M;
  • Schaffner, H;
  • Schausten, B;
  • Semchenkov, A;
  • Steiner, J;
  • Thörle-Pospiech, P;
  • Trautmann, N;
  • Türler, A;
  • Uusitalo, J;
  • Ward, D;
  • Wegrzecki, M;
  • Wieczorek, P;
  • Wiehl, N;
  • Yakushev, A;
  • Yakusheva, V
  • et al.

The isotopic distribution of nuclei produced in the 50Ti + 249Cf reaction has been studied at the gas-filled recoil separator TASCA at GSI Darmstadt, which separates ions according to differences in magnetic rigidity. The bombardment was performed at an energy around the Bass barrier and with the TASCA magnetic fields set for collecting fusion-evaporation reaction products. Fifty-three isotopes located “north-east” of 208Pb were identified as recoiling products formed in non-fusion channels of the reaction. These recoils were implanted with energies in two distinct ranges; besides one with higher energy, a significant low-energy contribution was identified. The latter observation was not expected to occur according to kinematics of the known types of reactions, namely quasi-elastic, multi-nucleon transfer, deep-inelastic collisions or quasifission. The present observations are discussed within the framework of two-body kinematics passing through the formation of a composite system.

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