Abstract
High-energy proton induced fission is studied in the framework of a two-step model. In the first step, the projectile penetrates the target nucleus, knocks out few nucleons and leaves the residual nucleus with a spectrum of excitation energies depending upon the number of projectile-nucleon collisions. This stage is described in terms of a simplified version of Glauber's multiple-scattering theory. The second stage in which the residual nucleus fissions, is treated by assuming phenomenological expressions for the dependence of the fission probability on excitation energy which take into account the onset of fragmentation at a certain “crack” energy. Comparison with experimental data suggests that high energy fission of heavy nuclei proceeds in a way similar to low-energy fission. Light nuclei, however, require a more violent fission mechanism.
Similar content being viewed by others
References
Vandenbosch, R., Huizenga, J.R.: Nuclear fission. New York, London: Academic Press 1973
Friedlander, G.: Physics and chemistry of fission, Vol. II. Vienna: IAEE 1965
Grangé, P., Li, J.Q., Weidenmüller, H. A.: Phys. Rev. C27, 2063 (1983)
Sauer, G., Chandra, H., Mosel, U.: Nucl. Phys. A264, 221 (1976)
Bartel, J., Quintin, P.: Phys. Lett. B152, 29 (1985)
Iljinov, A.S., Cherepanov, E.A., Chigrinov, S.E.: Z. Phys. A — Atoms and Nuclei238, 37 (1978)
Cugnon, J.: Nucl. Phys. A462, 751 (1987)
Abul-Magd, A.Y., Friedman, W.A., Hüfner, J.: Phys. Rev. C34, 113 (1986)
Simbel, M.H., Abul-Magd, A.Y.: Phys. Rev. C38, 2756 (1988)
Perfilov, N.A.: Yadernye reaktsii pod deistviem chastits vysokikh energii (Nuclear reactions induced by high energy particles). Moscow: AN SSSR 1962
Zhang, X.Z., Gross, D.H.E., Xu, S.Y., Zheng, Y.M.: Nucl. Phys. A461, 668 (1987)
Bondorf, J.P., Donangelo, R., Mishustin, I.N., Schulz, H.: Nucl. Phys. A444, 460 (1985)
Randrup, J., Koonin, S.E.: Nucl. Phys. A471, 335c (1987)
Crespo, V.P., Alexander, J.M., Hyde, E.K.: Phys. Rev.131, 1765 (1963)
Particle Data Group: Rev. Mod. Phys.52, S 1 (1980)
Igo, G.J.: Rev. Mod. Phys.50, 523 (1978)
Gross, D.H.E., Massmann, H.: Nucl. Phys. A471, 339c (1987)
Nix, J.R.: Nucl. Phys. A130, 241 (1969)
Wapstra, A.H., Audi, G.: Nucl. Phys. A432, 1 (1985)
Zheng, Y.M., Massmann, H., Xu, S.Y., Gross, D.H.E., Zhang, X.Z., Lu, Z.Q., Sa, B.H.: Phys. Lett.194 B, 183 (1987)
Hüfner, J.: Phys. Rep.125, 129 (1985)
Bohrmann, S., Hüfner, J., Nemes, M.C.: Phys. Lett.120 B, 57 (1983)
Ivanova, N.S.: Sov. Phys. JETP.4, 365 (1957);
Konshin, V.A., Matusevich, E.S., Regushevski, V.I.: Sov. J. Nucl. Phys.2, 489 (1966);
Remy, G., Ralarosy, J., Stein, R., Debeauvai, M., Tripier, J.: Nucl. Phys. A163, 583 (1971);
Todorovich, Z., Antanasijevic, R., Juric, M.: Z. Phys.261, 329 (1973);
Hudis, J., Katkoff, S.: Phys. Rev. C13, 1961 (1976);
Todorovic, Z., Antanasijevic, R.: Nuovo Cimento33A, 546 (1976);
Bochagov, B.A., Bychenkov, V.S., Dmitriev, V.D., Mal'tsev, S.P., Obukhov, A.I., Perfilov, N.A., Udod, V.A., Shegaev, O.E.: Sov. J. Nucl. Phys.28, 291 (1978);
Debeauvais, M., Tripier, J., Jokic, S., Todorovic, Z., Antanasijrvic, R.: Phys. Rev. C23, 624 (1981);
Vaishene, L.A., Andronenko, L.N., Kovshevny, G.G., Kotov, A.A., Solyakin, G.E., Neubert, W.: Z. Phys. A — Atomic Nuclei302, 143 (1981);
Khan, H.A., Khan, N.A.: Phys. Rev. C29, 2199 (1984)