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Phys. Rev. C 66, 054607 (2002) [12 pages]

Comparison between α and proton sequential emission in 16O(132MeV)+58Ni deep inelastic collisions

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R. Barná, D. De Pasquale, A. Italiano, A. Trifiró, and M. Trimarchi
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Messina–Messina, Dipartimento di Fisica dell’Università–Messina, Salita Sperone 31, Vill. S. Agata 98166 Messina, Italy

V. Rauch, C. Beck, T. Bellot, C. Bhattacharya*, D. Disdier†, R. M. Freeman, F. Haas, R. Nouicer‡, P. Papka, M. Rousseau§, and O. Stezowski**
Institut de Recherches Subatomiques, UMR7500, IN2P3/CNRS–Université Louis Pasteur Strasbourg, 23, rue du Loess, BP 28, F-67037 Strasbourg Cedex 2, France

A. Strazzeri
Dipartimento di Fisica dell’Università–Catania, Istituto Nazionale di Fisica Nucleare, Sezione di Catania–Catania, Corso Italia 57, 95129 Catania, Italy

Received 13 March 2002; published 27 November 2002

The 16O+58Ni deep-inelastic collision has been investigated at Elab(16O)=132MeV by using coincident charged particle techniques. Exclusive data of the projectilelike fragments (C, N, and O) and their associated light charged particles (protons and α particles) were collected in coincidence. The experiment has been performed at the IReS Strasbourg VIVITRON Tandem facility by using the ICARE charged particle multidetector array. The measured velocity diagrams and in-plane angular correlations have been analyzed by a semiclassical model that combines equilibrium and nonequilibrium processes of a deep-inelastic scattering reaction. Following the hypothesis of a sequential process, this closed-form theoretical approach is applied to the measured [(C,N,O)-p] and [(C,N,O)-α] differential multiplicities. Estimates on polarization phenomena and on “decay times” are used to provide information about deep-inelastic scattering in 16O+58Ni at 8.25 MeV/nucleon.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.66.054607
DOI:
10.1103/PhysRevC.66.054607
PACS:
25.70.Gh, 25.70.Jj, 25.70.Mn, 24.60.Dr

*Permanent address: VECC, 1/AF Bidhan Nagar, Kolkata 64, India.

†Deceased.

‡Present address: Department of Physics, University of Illinois at Chicago, Chicago, Illinois 60607-7059.

§Present address: University of Surrey, Guildford GU2 7XH, United Kingdom.

**Permanent address: IPN Lyon, F-69622 Villeurbanne, France.

 
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