Abstract
Inclusive energy spectra and cross sections of reaction products close to the14N projectile (11C,12C,13C,15N and15O) have been measured in the angular rangeθ L =1.2°–4.2° at an incident energy of 60 MeV/u for five different target nuclei (12C,27Al,58Ni,90Zr and208Pb). Two components are found to be systematically present in the energy spectra of the carbon isotopes, the first similar to that observed at relativistic energies and the second shifted down in energy characteristic for a very dissipative process. The dependence of the differential and integrated cross sections on the target mass indicates that the two-body final channels (14N,13C), (14N,15N) and (14N,15O) are strongly correlated to the fragmentation channels.
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Guerreau, D.: Proceedings of the Second International Conference on Nucleus-Nucleus Collisions, Visby, Sweden. Nucl. Phys. A447, 37c (1985)
Dayras, R.: HICOFED Conference. J. Phys. (Paris)47, C4–13 (1986)
Morrissey, D.J.: Phys. Rev. C39, 460 (1989)
Stokstad, R.G.: Comments Nucl. Part. Phys.13, 231 (1984)
Baur, G., Rösel, F., Trautmann, D., Shyam, R.: Phys. Rep.111, 333 (1984)
Hüfner, J.: HICOFED Conference. J. Phys. (Paris)47, C4–3 (1986)
Friedman, W.A.: Phys. Rev. C27, 569 (1983)
Hussein, M.S., McVoy, K.W.: Nucl. Phys. A445, 124 (1985)
Utsunomiya, H.: Phys. Rev. C32, 849 (1985)
Utsunomiya, H., Schmitt, R.P.: Nucl. Phys. A487, 162 (1988)
Udagawa, T., Tamura, T.: Phys. Rev.C33, 494 (1986)
Udagawa, T., Li, X.-H., Tamura, T.: Phys. Rev. C37, 429 (1988)
Ichimura, M., Austern, N., Vincent, C.M.: Phys. Rev. C32, 431 (1985)
Grzonka, D.: Dr. Thesis, University of Münster (1988); J. Phys. G (in print)
Van Bibber, K., Hendric, D.L., Scott, D.K., Weiman, H.H., Schroeder, L.S., Geaga, J.V., Cessin, S.A., Treuhaft, R., Grossiord, Y.J., Rasmussen, J.O., Wong, C.-Y.: Phys. Rev. Lett.43, 840 (1979)
Steckmeyer, J.C., Bizard, G., Brou, R., Eudes, P., Laville, J.L., Natowitz, J.B., Patry, J.P., Tamain, B., Thiphagne, A., Doubre, H., Péghaire, A., Péter, J., Rosato, E., Adloff, J.C., Kamili, A., Rudolf, G., Scheibling, F., Guilbault, F., Lebrun, C.: Nucl. Phys. A500, 372 (1989)
Pruneau, C., Potvin, L., Roy, R., St-Pierre, C., Ball, G.C., Bougault, R., Hagberg, E., Horn, D., Cebra, D., Fox, D., Westfall, G.D.: Nucl. Phys. A500, 168 (1989)
Morjean, M., Frehaut, J., Guerreau, D., Charvet, J.L., Duchêne, G., Doubre, H., Galin, J., Ingold, G., Jacquet, D., Jahnke, U., Jiang, D.X., Lott, B., Magnago, C., Patin, Y., Pouthas, J., Pranal, Y., Uzureau, J.L.: Phys. Lett.203B, 215 (1988)
Mermaz, M.C., Dayras, R., Barrette, J., Berthier, B., De Castro, Rizzo D.M., Cisse, O., Legrain, R., Pagano, A., Pollacco, E., Delagrange, H., Mittig, W., Heusch, B., Lanzano, G., Palmeri, A.: Nucl. Phys. A441, 129 (1985)
Egelhaaf, Ch., Bürgel, M., Fuchs, H., Gamp, A., Homeyer, H., Kovar, D., Rauch, W.: Nucl. Phys. A405, 397 (1983)
Homeyer, H., Bürgel, M., Clover, M., Egelhaaf, Ch., Fuchs, H., Gamp, A., Kovar, D., Rauch, W.: Phys. Rev. C26, 1335 (1982)
Egelhaaf, Ch., Bohlen, G., Fuchs, H., Gamp, A., Homeyer, H., Kluge, H.: Phys. Rev. Lett.46, 813 (1981)
Goldhaber, A.S.: Phys. Lett.53B, 306 (1974)
Serber, R.: Phys. Rev.72, 1008 (1947)
Blumenfeld, Y., Chomaz, Ph., Frascaria, N., Garron, J.P., Jacmart, J.C., Roynette, J.C.: Nucl. Phys. A455, 357 (1986)
Mermaz, M.C., Borrel, V., Guerreau, D., Galin, J., Gatty, B., Jacquet, D.: Z. Phys. A — Atomic Nuclei324, 217 (1986)
Stephans, G.S.F., Janssens, R.V.F., Kovar, D.G., Wilkins, B.D.: Phys. Rev. C35, 614 (1987)
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Performed at the GANIL national facility, Caen, France
We are indebted to Drs. H. Fuchs and H. Homeyer for helpful and enlightening discussions during the analysis. One of the authors (W.v.Oe.) would like to appreciatively acknowledge the hospitality of GANIL extended to him, when this experiment was performed.