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Peculiarities in fragment mass distribution in the 238U + 40Ar (243 MeV) reaction |
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| Authors: | YuV Pyatkov YuE Penionzhkevich WH Trzaska OI Osetrov AA Alexandrov IA Alexandrova J Äystö K-Th Brinkmann SV Khlebnikov VF Kushniruk AV Kuznetsov VG Lyapin VA Maslov M Mutterer Z Radivojevich VA Rubchenya YuG Sobolev GP Tiourine DN Vakhtin |
| Institution: | Moscow Engineering Physics Institute, Moscow, Russia, RU Flerov Laboratory of Nuclear Reaction, JINR, Dubna, Russia, RU Department of Physics of University of Jyv?skyl?, Jyv?skyl?, Finland, FI Khlopin Radium Institute, St.Petersburg, Russia, RU Technical University, Dresden, Germany, DE Technical University, Darmstadt, Germany, DE |
| Abstract: | A pronounced fine structure (FS) in the form of distinct peaks was observed in neutron gated mass spectra from the decay of the 278110 composite system produced in the reaction 238U + 40Ar (243 MeV) at an initial excitation energy E * > 70 MeV. The FS peaks are located in the vicinity of mass numbers 70-80, 100, and 130, which correspond to those of magic nuclei (clusters). In the data there is also evidence for a new type of decay -- collinear cluster tripartition of an excited nucleus. Received: 8 August 2000 / Accepted: 2 February 2001 |
| Keywords: | PACS 25 70 Lm Strongly damped collisions – 25 70 Pq Multifragment emission and correlations – 25 85 Ge Charged-particle-induced fission |
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