Abstract
Energy spectra and multiplicities of neutrons from the reaction system 838 MeV32S projectiles on197Au have been measured in coincidence with binary fragmentations. Neutron detection was performed simultaneously in a 4π scintillator sphere and by time-of-flight. The linear momentum transfer (LMT) and the excitation energyE *CN are deduced with the folding angle technique. Neutron multiplicities are compared for consistency and discussed as a measure of LMT andE *CN . The saturation ofM 4π (E *CN ) beyondE *CN ≈400 MeV seen for several systems of high fissility (x≧0.8) is attributed to the spreading of the folding angle distribution and the increasing competition of charged particle evaporation.
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Viola, V.E.: Nucl. Phys. A502, 531c (1989)
Galin, J.: Nucl. Phys. A488, 297 c (1988)
La Rana, G., Nebbia, G., Tomasi, E., Ngô, C., Chen, X.S., Leray, S., Lhenoret, P., Lucas, R., Mazur, C., Ribrag, M., Cerruti, C., Chiodelli, S., Demeyer, A., Guinet, D., Charvet, J.L., Morjean, M., Peghaire, A., Pranal, Y., Sinopoli, L., Uzureau, J.L., de Swiarski, R.: Nucl. Phys. A407, 233 (1983)
Pollacco, E.C., Conjeaud, M., Harar, S., Volant, C., Cassagnou, Y., Dayras, R., Legrain, R., Nguyen, M.S., Oeschler, H., Saint-Laurent, F.: Phys. Lett. B146, 29 (1984)
Rossner, H., Hilscher, D., Hinde, D.J., Gebauer, B., Lehmann, M., Wilpert, M., Mordhorst, E.: Phys. Rev. C40, 2629 (1989)
Galin, J.: Nucl. Phys. A447 519c (1985)
Galin, J., Ingold, G., Jahnke, U., Hilscher, D., Lehmann, M., Rossner, H., Schwinn, E.: Z. Phys. A — Atomic Nuclei331, 63 (1988)
Galin, J., Charvet, J.L., Cramer, B., Crema, E., Doubré, H., Fréhaut, J., Gatty, B., Guerreau, D., Ingold, G., Jacquet, D., Jahnke, U., Jiang, D.X., Lott, B., Magnago, C., Morjean, M., Patin, Y., Piasecki, E., Pouthas, J., Saint-Laurent, F., Schwinn, E., Sokolov, A., Wang, X.D.: In: Proc. of the Symposium on Nuclear Dynamics and Nuclear Disassembly, Dallas, 1989. Natowitz, J. (ed.) p. 320. Singapore: World Scientific 1989
Schwinn, E., Cramer, B., Ingold, G., Jahnke, U., Hilscher, D., Lehmann, M., Rossner, H.: HMI Jahresbericht 1989/90, p. 68
Mordhorst, E., Strecker, M., Frobeen, H., Gasthuber, M., Scobel, W., Gebauer, B., Hilscher, D., Lehmann, M., Rossner, H., Wilpert, Th.: Phys. Rev. C43, 716 (1991)
Jiang, D.X., Doubré, H., Galin, J., Guerreau, D., Piasecki, E., Pouthas, J., Sokolov, A., Cramer, B., Ingold, G., Jahnke, U., Schwinn, E., Charvet, J.L., Fréhaut, J., Lott, B., Magnago, C., Morjean, M., Patin, Y., Pranal, Y., Uzureau, J.L., Gatty, B., Jacquet, D.: Nucl. Phys. A503, 560 (1989)
Budtz-Jørgensen, C., Knitter, H.H.: Nucl. Phys. A490, 307 (1988)
Poitou, J., Signarbieux, C.: Nucl. Instrum Methods114, 113 (1974)
Cramer, B.: PhD Thesis, Freie Universität Berlin 1989
Dietze, G., Klein, H.: Report PTB-ND-22. Braunschweig: Physikalisch-Technische Bundesanstalt 1982
Holler, Y., Kaminsky, A., Langkau, R., Scobel, W., Trabandt, M.: Nucl. Phys. A442, 79 (1985)
Wapstra, A.H., Bos, K.: At. Data Nucl. Data Tables17, 474 (1976)
Galin, J., Wang, X.M., Crema, E., Guerreau, D., Jiang, D.X., Morjean, M., Pouthas, J., Saint-Laurent, F., Sokolev, A., Gatty, B., Jacquet, D., Lott, B., Jahnke, U., Schwinn, E., Piasecki, E., Charvet, J.L.: In: Proc. Symposium on Heavy-Ion Collisions, Obernai, 1990. Heusch, B., Ishihara, M. (eds.) p. 102. Singapore: World Scientific 1991
Strecker, M., Wien, R., Plischke, P., Scobel, W.: Phys. Rev. C41, 2172 (1990)
Blann, M.: Phys. Rev. C31, 1245 (1985)
Gonin, M., Cooke, L., Fornal, B., Gonthier, P., Gui, M., Natowitz, J.B., Nardelli, G., Nebbia, G., Prete, G., Schmitt, R.P., Srivaslava, B., Turmel, W., Utely, D., Utsunomiya, H., Viesti, G., Wada, R., Wilins, B., Zanon, R.: Nucl. Phys. A495, 139c (1989)
Jacquet, D., Peaslee, G.F., Alexander, J.M., Borderie, B., Duek, E., Galin, J., Gardes, D., Grégoire, C., Guerreau, D., Fuchs, H., Lefort, M., Rivet, M.F., Tarrago, X.: Nucl. Phys. A511, 195 (1990)
Jahnke, U.: J. Phys. (Paris) C4, 317 (1986)
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Knoche, K., Sprute, L., Behrmann, W. et al. Total neutron multiplicities as a measure of the violence in heavy ion reactions. Z. Physik A - Hadrons and Nuclei 342, 319–327 (1992). https://doi.org/10.1007/BF01291516
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DOI: https://doi.org/10.1007/BF01291516