Abstract
A model with two collective variables,r-the distance between nuclei andθ-the deflection angle in the center-of-mass system, was used. In the classical frame, the time evolution of the nuclear composite system confirmed the Wilczynski model. It was obtained that for the interacting system40Ar(300 MeV)+197Au, deep inelastic collisions correspond to 1-values in the range 126 ≦ 1 ≦ 210. This implies interaction times in the range 5×10−22 s to 3.4×10−21 s and energy losses from 30 to 160 MeV. The obtained 1cr value, 1cr=125 and the fusion cross section are in agreement with experimental data. Calculating the double differential cross sectiond 2σ/dθdE in the statistical formalism one obtains a qualitative agreement with experimental data. The introduction of statistical fluctuations in calculating the angular distributiondσ/dθ determines a good description of experimental data. The energy dissipation up to 130 MeV (deduced from Wilczynski plot) is in good agreement with experimental data.
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One of the authors, Iliana Brâncuş, is grateful to Prof. M. Lefort, Dr. C. Ngo and Dr. D. Gross for valuable discussions and comments. The authors express their gratitude to Prof. V.V. Volkov and to the members of his group at J.I.N.R.-Dubna, for the help in performing the measurements quoted here.
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Brâncuş, I.M., Berceanu, I., Buţă, A. et al. Classical and statistical analysis of40Ar(300 MeV)+197Au deep inelastic interaction. Z Physik A 320, 443–449 (1985). https://doi.org/10.1007/BF01415721
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DOI: https://doi.org/10.1007/BF01415721