Energy spectra and angular distribution of projectile-like fragments in 84 MeV 12C + 169Tm |
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Authors: | S. Sodaye K. Sudarshan B.S. Tomar A. Goswami S. Mukherjee K. Mahata |
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Affiliation: | (1) Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN;(2) School of Studies in Physics, Vikram University, Ujjain 456010, India, IN;(3) Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India, IN |
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Abstract: | Kinetic-energy spectra and angular distribution of projectile-like fragments have been measured in the reaction of 84 MeV 12C on 169Tm, using the surface barrier silicon-based ΔE-E telescopes. The fragments close to the projectile show typical spectra of quasi-elastic transfer reactions, which were found to be in agreement with the calculations based on the direct surface transfer reaction model. A significant cross-section of fast alpha-particles was found at forward angles, reminiscent of incomplete fusion reactions, which could be explained in terms of the direct surface transfer reaction model after taking into account the level density of continuum states in the heavy reaction product. The results have been explained in terms of the continuous evolution of the reaction mechanism as a function of the mass transfer. Received: 13 March 2002 / Accepted: 3 May 2002 |
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Keywords: | PACS. 25.70.Gh Compound nucleus – 25.70.Jj Fusion and fusion-fission reactions |
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