Abstract
Mass andZ-distributions of fusion products from the reaction 5.8 MeV/u46Ti+12C were measured in the angular range betweenθ lab=1.5° and 8° using a time-of-flightΔE−E telescope. The results are compared with an earlier measurement of the reaction32 S+26Mg, in which the same compound nucleus was produced at higher excitation energy. The residual nuclide distributions are interpreted with the aid of evaporation calculations and the influence of shell effects in the level densities is discussed. The data are consistent with the assumption that the shell effects vanish above 15 to 20 MeV excitation energy, that is, that they are essentially only important for the last evaporation step.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Pühlhofer, F., Schneider, W.F.W., Busch, F., Barrette, J., Braun-Munzinger, P., Gelbke, C.K., Wegner, H.E.: Phys. Rev. C16, 1010 (1977)
Schneider, W.F.W., Pfeffer, W., Kohlmeyer, B., Pühlhofer, F.: Verhandl. DPG (VI)10, 818 (1975);
Kohlmeyer, B., Pfeffer, W., Pühlhofer, F.: Nucl. Phys. A292, 288 (1977)
Chestnut, R.R., Grasmück, B., Hadsell, R.W., Leberhausen, W., Plappert, W., Richter, M., Rother, H.P., Siart, O.: EDAS/GSI Experimental-Data Acquisition System, GSI-report 1977
Cramer, J.G., De Vries, R.M., Zisman, M.S., Nair, K.G., Lin, K.-L., Chan, Y.-D.: Proc. of the Intern. Conf. on Nuclear Physics, Munich 1973, (eds.) de Boer, J., Mang, H.J., Vol.1, p. 342. Amsterdam: North Holland Publishing Company 1973
Reisdorf, W.: Private communication
Bass, R.: Phys. Rev. Lett.39, 265 (1977)
Natowitz, J.B., Chulick, E.T., Namboodiri, M.N.: Phys. Rev. C6, 2133 (1972)
Pühlhofer, F., Pfeffer, W., Kohlmeyer, B., Schneider, W.F.W.: Nucl. Phys.A244, 329 (1975)
Pühlhofer, F.: Nucl. Phys.A280, 267 (1977)
Dilg, W., Schantl, W., Vonach, H., Uhl, M.: Nucl. Phys.A217, 269 (1973)
Williams, F.C., Chan, G., Huizenga, J.R.: Nucl. Phys.A187, 225 (1972)
Canty, M.J., Gottschalk, P.A., Pühlhofer, F.: to be published
Author information
Authors and Affiliations
Additional information
On leave from the Fachbereich Physik der Universität Marburg
Rights and permissions
About this article
Cite this article
Busch, F., Canty, M.J., Pfeffer, W. et al. A study of the influence of shell effects in nuclear level densities on the decay of the compound nucleus58Ni. Z Physik A 290, 167–172 (1979). https://doi.org/10.1007/BF01408111
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01408111