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Correlations between fission fragments and light charged-particles in the reaction20Ne+197Au at 13 MeV/nucleon |
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| Authors: | M F Rivet B Gatty H Guillemot B Borderie R Bimbot I Forest J Galin D Gardes D Guerreau M Lefort X Tarrago B Tamain L Novicki |
| Institution: | 1. Institut de Physique Nucléaire, Orsay, France 2. Laboratoire de Physique Corpusculaire, Esplanade de la Paix, Caen, France 3. Institute of Nuclear Research, Swierk, Poland |
| Abstract: | rgy of light charged-particles has been measured in coincidence with one or two fission fragments in the reaction20Ne+197Au at a bombarding energy of 13 MeV/u. The fission cross section was found equal to 1,340±260 mb. Assuming that it represents the totality of the fusion cross section, the critical valuel c is deduced equal to 93±9?, higher thanl Bf=0=74 in the rotating liquid drop model. The main emission source for protons and alpha particles seems to be a thermally equilibrated composite system. The competition between fission and charged particle emission is unexpected in the frame of the statistical treatment. A high energy component is observed in the forward direction. These results correspond to the first step of a study programme on the evolution of nucleus-nucleus collisions between 10 and 100 MeV per nucleon. |
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