2018 Impact factor 2.481
Hadrons and Nuclei
Eur. Phys. J. A 9, 63-68

Two-neutron correlations at small relative momenta in \ensuremath{\mathsf{^{40}Ar + {}^{197}Au}} collisions at 60 MeV/nucleon

J. Pluta1 - K. Wosinska1 - Z. Basrak2 - G. Bizard3 - B. Benoit4 - P. Désesquelles5 - O. Dorvaux6 - D. Durand3 - B. Erazmus7 - F. Hanappe4 - B. Jakobsson8 - C. Lebrun7 - F.R. Lecolley3 - R. Lednicky9 - P. Leszczynski1 - K. Mikhailov10 - K. Miller1 - B. Noren8 - T. Pawlak1 - M. Przew\locki1 - Ö. Skeppstedt11 - A. Staranowicz1 - A. Stavinskiy10 - L. Stuttgé12 - B. Tamain3

1 Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland
2 Rud height 0.09ex width 0.2em height 0.09ex width 0.06emer Boskovic Institute, P.O. Box 180, HR-10002 Zagreb, Croatia
3 Laboratoire de Physique Corpusculaire, IN2P3-CNRS, ISMRA et Université, 14050 Caen cedex, France
4 Université Libre de Bruxelles, B-1050 Bruxelles, Belgium
5 Institut des Sciences Nucléaires, IN2P3-CNRS et Université J. Fourier, 38026 Grenoble cedex, France
6 Accelerator Laboratory, University of Jyväskylä, P.O. Box 35, FIN-40351 Jyväskylä, Finland
6 Laboratoire SUBATECH, École des Mines de Nantes, IN2P3-CNRS et Université, 44307 Nantes cedex 03, France
7 University of Lund, 22100 Lund, Sweden
8 Institute of Physics ASCR, Na Slovance 2, 18221 Prague 8, Czech Republic
9 Institute for Theoretical and Experimental Physics, Moscow, Russia
10 Chalmers University of Technology, 412 96 Göteborg, Sweden
11 Institut de Recherches Subatomiques, IN2P3-CNRS et Université L. Pasteur, 67037 Strasbourg cedex 2, France

Received: 5 April 2000 / Revised version: 10 July 2000
Communicated by D. Guerreau

Abstract
Two-neutron correlation functions are measured in the 40Ar+197Au reaction at 60 MeV/nucleon to study the space-time characteristics of neutron emitting sources. The source temperatures and velocities are deduced by fitting the single-neutron energy spectra with a three-source model. A comparison of the correlation data with the predictions of the model of moving sources and with the dynamical Landau-Vlasov model suggests the relevance of a multisource description. Particular care has been paid to the influence of the relative source abundance on the shape of the correlation function.

PACS
25.70.-z Low and intermediate energy heavy-ion collisions - 25.75.Gz Particle correlations


Copyright Società Italiana di Fisica, Springer-Verlag 2000