Abstract
A dynamical model using three collective degrees of freedom: (r) — the distance between the center-of-mass of the nuclei, (gq) — the deflection angle and (x) — the mass-asymmetry, was applied to analyse deep inelastic collisions in a light cpmposite system19F(72 MeV) +14Mg. Two kinds of nuclear potentials, a proximity and a Woods-Saxon one, have been chosen to describe the nuclear interaction. To obtain a good prediction of the 1-critical values for fusion and a good description of the experimental angular distributions it was necessary to use much larger values of the coefficients for the friction tensor, as compared to the case of heavy composite systems. By comparing with experimental angular distributions it resulted that deep inelastic collisions in such light composite system correspond to a dissipated energy higher than 5 MeV. In the Wilczynski plots for such light composite system at about 1.3 MeV/u above the Coulomb barrier, a mixing of quasielastic and deep inelastic components was found in agreement with the experimental energy spectra. Based on theQ gg systematics, the calculated cross-sections d2 σ/dgq dA forA=16 gave a good estimation of the experimental angular distribution for theZ=8 element.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Lefort, M.: Nukleonika21, 1 (1976)
Lefort, M., Ngo, C.: Proceedings of the Predeal International School, Romania, p. 571, 1978
Volkov, V.V.: Yaderniie Reactsii Glubokoneuprughih Peredacii. Energoisdat: Moscow 1982
Sato, M., Sasagase, M., Nagashima, Y., Schimizu, J., Nakagawa, T., Fukuchi, Y., Mikumo, T.: Phys. Rev. C27, 2621 (1983)
Petrascu, M., Berceanu, I., Brancus, I., Buta, A., Grama, C., Lazar, I., Mihai, I., Petrovici, M., Simion, V.: Rev. Roum. Phys.29, 689 (1984)
Buta, A., Berceanu, I., Brancus, I., Demian, A., Grama, C., Lazar, I., Mihai, I., Petrascu, M., Petrovici, M., Simion, V.: Rev. Roum. Phys.31, 29 (1986)
Ngo, C.: Proceedings of the Brasov International School, Romania, p. 395, 1980
Brancus, I.M., Constantinescu, A.: Rev. Roum. Phys.32, 637 (1987)
Ngo, C., Tamain, B., Beiner, M., Lombard, R.J., Mas, D., Deubler, H.H.: Nucl. Phys. A252, 237 (1975)
Brancus, I., Berceanu, I., Buta, A., Grama, C., Lazar, I., Mihai, I., Petrascu, M., Simion, V.: Z. Phys. A — Atoms and Nuclei320, 443 (1985)
Wilczynski, J., Siwek-Wilczynska, K.: Phys. Lett.55B, 270 (1975); Phys. Lett.74B, 313 (1978)
Wilczynski, J., Siwek-Wilczynska, K., Van Driel, J., Gonggryp, S., Hageman, D.C.J.M., Janssens, R.F.V., Lukasiak, J., Siemssen, R.H., Van der Werf, S.Y.: Nucl. Phys. A373, 109 (1982)
Gross, D.H.E., Kalinowski, H.: Phys. Lett.47B, 302 (1974)
Gross, D.H.E.: Phys. Rep.15, 175 (1978)
Ngo, C., Hofmann, H.: Z. Phys. A — Atoms and Nuclei282, 83 (1977)
Brancus, I.M., Brancus, D.E., Constantinescu, A.: Rev. Roum. Phys.34, no. 6 (1989)(to appear)
Author information
Authors and Affiliations
Additional information
We are indebted to Professor M. Ivascu for permanent encouragement and stimulating discussions. One of us (I.M. Brancus) is grateful to Dr. C. Ngo, Dr. D. Gardes, Dr. M.F. Rivet, Dr. B. Borderie and Dr. D. Gross, for fruitful discussions and for warm hospitality during the stay at I.P.N. Orsay.
Rights and permissions
About this article
Cite this article
Brancus, I.M., Berceanu, I., Buta, A. et al. Dynamical analysis of deep inelastic interactions in a light composite system (19F +14Mg) at about 1.3 MeV/u above the Coulomb barrier. Z. Physik A - Atomic Nuclei 333, 71–77 (1989). https://doi.org/10.1007/BF01290111
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01290111