Summary
Alpha-particle-induced reactions on the target element gold were investigated from 30 to 75 MeV, using stacked-foil activation technique and Ge(Li) gamma-ray spectroscopy method. Six excitation functions for reactions of the type197Au(α,xn),x=1–3,197Au(α, 2pn) and197Au(α, αxn),x=1–3, were studied, of which five new data points and a new reaction were added to the existing data. The experimental cross-section were compared with the predictions of pre-equilibrium hybrid model, as well as the more recent index model using the initial exciton number,n 0=4(4p0h). It was observed that both models show better agreement in respect of (α,xn)-type reactions. However, they are equally bad for the reactions emitting protons and alpha-particles, and for which some direct reaction contributions are indicated.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Goldberger M. L.,Phys. Rev.,74 (1948) 1268.
Griffin J. J.,Phys. Rev. Lett.,17 (1966) 478.
Griffin J. J.,Phys. Lett. B,24 (1967) 5.
Blann M.,Phys. Rev. Lett.,27 (1971) 337.
Gadioli E., Gadioli-Erba E. andSona P. G.,Nucl. Phys. A,217 (1973) 589.
Cline C. K.,Nucl. Phys. A,210 (1973) 590.
Betak E. andDobes J.,Z. Phys. A,279 (1976) 319.
Blann M.,Phys. Rev. C,17 (1978) 1871.
Gadioli E., Gadioli-Erba E. andTagliaferri G.,Phys. Rev. C,17 (1978) 2238.
Ernst J. andRama Rao J.,Z. Phys. A,281 (1977) 129.
Bisplinghoff J.,Phys. Rev. C,33, (1986) 1569.
Akkermans H.,The PEQ hybrid and exciton models revised, paper presented atThe International Conference on Nuclear Data for Basic and Applied Sciences, Santa Fe, N.H., 1986.
Ernst J., Friedland W. andStockhorst H.,Z. Phys. A,328 (1987) 333.
Blann M., Code ALICE, Report COO-3494-10 (1973).
Blann M., Code OVERLAID Alice, Report COO 349424 (1976).
Blann M. andBisplinghoff J., ALICE/LIVERMORE 82, Report UCID-19614 (1982).
Blann M., Code ALICE/85/300 UCID-20169 (1984).
Lanzafame F. M. andBlann M.,Nucl. Phys. A,142 (1970) 545.
Kurz H. E., Jasper E. M., Fischer K. andHermes F.,Nucl. Phys. A,168 (1971) 129.
Capurro O. A., de la Vega Vedoya M., Wasilevsky C. andNassif S. J.,J. Radioanal. Nucl. Chem.,89/2 (1985) 519.
Probst H. J., Qaim S. M. andWeinreich R.,Int. J. Appl. Radiat. Isotopes,27 (1976) 431.
Williamson C. F., Boujot J. P. andPicard J., CENS Report, CEA-R3042 (1966).
Lederer C. M. andShirley V. S.,Tables of Isotopes (John Wiley and Sons, New York, N.Y.) 1978.
Mohan Rao A. V., Mukherjee S. andRama Rao J.,Pramana J. Phys.,38 (1992) 279.
Machner H.,Phys. Lett. B,86(1979) 129;Phys. Rev. C,21 (1980) 2695;Phys. Rep.,127, (1985) 309.
Myers R. D.,Droplet Model of Atomic Nuclei (Plenum, New York, N.Y.) 1977.
Kalbach C., PRECO-D2Program for calculating pre-equilibrium and direct reaction double-differential cross-sections, Los Alamos National Laboratory, Report LA-10248-MS (1985).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mukherjee, S., Singh, N.L. Pre-equilibrium nucleon and alpha-particle emission in the alpha-particle-induced reactions on heavy nuclei. Nuov Cim A 108, 269–279 (1995). https://doi.org/10.1007/BF02787054
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02787054