Abstract
The classical model introduced earlier for analyzing experimental data on dissipative heavy-ion collisions, is generalized to include effects from the gradual dissipation of radial kinetic energy and from the development of fragment deformations during the collision. Relaxation times for the dissipation of radial kinetic energy (τ R ) and relative angular momentum (τ l ) as well as for the development of deformations (τα) are fitted to the reaction86Kr (8.18 MeV/u) +166Er and applied to three other reactions. A consistent set of relaxation times isτ R = 0.3 · 10−21 s,τ l =1.5 · 10−21 s andτ α = 5 · 10−21 s. Empirical mass transport coefficients are deduced from comparisons with experimental element distributions. Effects from fluctuations in the deflection function are discussed. Evidence is found for the existence of a relaxation time of the order 10−21 s in the mass-drift coefficient.
Similar content being viewed by others
References
Wolschin, G., Nörenberg, W.: Z. Physik A284, 209 (1978)
Wolschin, G.: FIZIKA9, 513 (1977), Supplement 4 and Nukleonika22, 1165 (1977)
Wolschin, G., Nörenberg, W.: Phys. Rev. Lett.41, 691 (1978)
Ayik, S., Wolschin, G., Nörenberg, W.: Z. Physik A286, 271 (1978)
Rudolf, G., et al.: Z. Physik, to be published
Schröder, W.U., Birkelund, J.R., Huizenga, J.R., Wolf, K.L., Unik, J.P., Viola, Jr., V.E.: Phys. Rev. Lett.36, 514 (1976)
Wilcke, W.: private communication
Riedel, C., Nörenberg, W.: Z. Physik, to be published
Blann, M.: Ann. Rev. Nucl. Sci.25, 123 (1975)
Author information
Authors and Affiliations
Additional information
On leave from the Institut für Theoretische Physik der Universität D-6900 Heidelberg, Philosophenweg 19
We appreciate the intimate collaboration with all our experimental colleagues at GSI and Rochester, in particular, A. Gobbi, G. Rudolf and W.U. Schröder.
Rights and permissions
About this article
Cite this article
Riedel, C., Wolschin, G. & Nörenberg, W. Relaxation times in dissipative heavy-ion collisions. Z Physik A 290, 47–55 (1979). https://doi.org/10.1007/BF01408479
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01408479