Abstract
A coalescence model originally proposed to account for the emission of nucleons and light particles in nuclear reactions is extended to account for intermediate mass fragment (IMF) emission. This theory uses a set of Boltzmann master equations to evaluate the time evolution of the occupation probability of nucleon states in the course of the de-excitation cascade during which the IMF are emitted. The internal structure of the IMF and the depletion of nucleon states due to IMF emission are explicitly considered. The theoretical predictions reproduce satisfactorily the experimental multiplicity spectra measured in central collisions of36Ar ions with197Au at incident energies of 35 MeV/nucleon.
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Kim, Y.D., Sozua, R.T. de, Bowman, D.R., Carlin, N., Gelbke, C.K., Gong, W.G., Lynch, W.G., Phair, L., Tsang, M.B., Zhu, F.: Phys. Rev. C45, 338 (1992)
Phair, L., Bowman, D.R., Gelbke, C.K., Gong, W.G., Kim. Y.D., Lisa, M.A., Lynch, W.G., Peaslee, G.F., Souza, R.T. de, Tsang M.B., Zhu, F.: Report MSUCL-831, April 1992
Bowman, D.R., Mader, C.M., Pleaslee, G.F., Bauer, W., Carlin, N., Souza, R.T. de, Gelbke, C.K., Gong, W.G., Kim, Y.D., Lisa, M.A, Lynch, W.G., Phair, L., Tsang, M.B., Williams, C., Colonna, N., Hanold, K., McMahan, M.A., Wozniak, G.J., Moretto, L.G., Friedman, W.A.: Report MUSCL-850, July 1992
Bass, R.: Nuclear reactions with heavy ions, Texts and Monographs in Physics, p. 111. Berlin, Heidelberg, New York: Springer 1980
Fabrici, E., Gadioli, E., Gadioli Erba, E., Galmarini, M., Fabbri, F., Reffo, G.: Phys. Rev. C40, 2548 (1989)
Fabrici, E., Gadioli, E., Gadioli Erba, E., Galmarini, M.: Phys. Rev. C42, 2163 (1990)
Fabrici, E., Gadioli, E., Gadioli Erba, E., Galmarini, M.: Z. Phys. A338, 17 (1991)
Cervesato, I., Fabrici, E., Gadioli, E., Gadioli Erba, E., Galmarini, M.: Phys. Rev. C45, 2369 (1992)
Bondorf, J.B., De, J.N., Fai, G., Karvinen, A.O.T., Jakobsson, B., Randrup, J.: Nucl. Phys. A333, 285 (1980)
Robel, M.C.: Ph. D. Thesis, Report LBL — 8181 (1979)
Grégoire, Ch., Rémaud, B., Sebille, F., Vinet, L., Raffray, Y.: Nucl. Phys. A465, 315 (1987)
Molitoris, J.J., Bonasera, A., Cavinato, M., Gulminelli, F.: Mod. Phys. Lett. A6, 3661 (1991)
Cassing, W., Niita, K., Wang, S.J.: Z. Phys. A331, 439 (1988)
Dostrovsky, I., Fraenkel, Z., Friedlander, G.: Phys. Rev.116, 683 (1959)
Perey C.M., Perey, F.G.: At. Data Nucl. Data Tables17, 1 (1976)
Christensen, R., Winther, A.: Phys. Lett. B65, 19 (1976)
Parker, W.E., Kaplan, M., Moses, D.J., La Rana, G., Logan, D., Lacey, R., Alexander, J.M., Castro Rizzo, D.M. de, De Young, P., Welberry, R.J., Boger, J.T.: Phys. Rev. C44, 774 (1991)
Lindner, A.: Institut für Kernphysik, Frankfurt, Report IKF-17, 1966
Mani, G.S., Melkanoff, M.A., Iori, I.: CEA, Saclay, Report 2379, 1963
Gelbke, C.K.: Private communication
Bertsch, G.F., Das Gupta, S.: Phys. Rep.160, 189 (1988)
Bertrand, F.E., Peelle, R.W.: Phys. Rev. C8, 1045 (1973)
Wada, R., Fabris, D., Hagel, K., Nebbia, G., Lou, Y., Gonin, M., Natowitz, J.B., Billerey, R., Cheynis, B., Demeyer, A., Drain, D., Guinet, D., Pastor, C., Vagneron, L., Zaid, K., Alarja, J., Giorni, A., Heuer, D., Morand, C., Viano, B., Mazur, C., Ngô, C., Leray, S., Lucas, R., Ribrag, M., Tomasi, E.: Phys. Rev. C39, 497 (1989)
Frullani S., Mougey, J.: Advances in nuclear physics. Negele J.W., Vogt, E. (eds.), vol. 14. New York, London: Plenum Press 1984
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Cavinato, M., Fabrici, E., Gadioli, E. et al. Intermediate mass fragment emission in Boltzmann master equation theory of pre-equilibrium reactions. Z. Physik A - Hadrons and Nuclei 347, 237–245 (1994). https://doi.org/10.1007/BF01289790
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DOI: https://doi.org/10.1007/BF01289790