Emission time scale of light particles in the system Xe+Sn
at 50 AMeV. A probe for dynamical emission?
D. Gourio1 - D. Ardouin2 - M. Assenard2 - G. Auger3 - Ch.O. Bacri4 - N. Bellaize5 - A. Benkirane3 - J. Benlliure3 - B. Berthier6 - E. Bisquer7 - B. Borderie4 - R. Bougault5 - P. Box4 - R. Brou5 - J.L. Charvet6 - A. Chbihi3 - J. Colin5 - D. Cussol5 - R. Dayras6 - E. De Filippo6 - A. Demeyer7 - C. Donnet7 - D. Durand5 - P. Ecomard3 - P. Eudes2 - M. Germain2 - D. Guinet7 - L. Lakehal-Ayat4 - P. Lautesse7 - J.L. Laville3 - L. Lebreton7 - C. Le Brun5 - J.F. Lecolley5 - T. Lefort5 - A. Lefèvre3 - R. Legrain6 - N. Le Neindre5 - O. Lopez5 - M. Louvel5 - N. Marie3 - V. Métivier2 - L. Nalpas6 - A. Ouatizerga4 - M. Parlog8 - J. Péter5 - E. Plagnol4 - E. Pollaco6 - A. Rahmani2 - R.Régimbart5 - T. Reposeur2 - M.F. Rivet4 - E. Rosato9 - F. Saint-Laurent3 - S. Salou3 - M. Squalli4 - J.C. Steckmeyer5 - G. Tabacaru8 - B. Tamain5 - L. Tassan-Got4 - E. Vient5 - C. Volant6 - J.P. Wieleczko3 - A. Wieloch5 - K. Yuasa-Nakagawa5
1 GSI mbH, 64291 Darmstadt, Germany
2 SUBATECH, IN2P3-CNRS et Universitè, 44070 Nantes Cedex, France
3 GANIL, CEA et IN2P3-CNRS, B.P. 5027, 14076 Caen Cedex, France
4 IPN, IN2P3-CNRS, 91406 Orsay Cedex, France
5 LPC, IN2P3-CNRS, ISMRA et Universitè, 14050 Caen Cedex, France
6 DAPNIA/SPhN, CEA/Saclay, 91191 Gif sur Yvette Cedex, France
7 IPN, IN2P3-CNRS et Universitè, 69622 Villeurbanne Cedex, France
8 NIPNE, 76900 Bucharest-Magurele, Romania
9
DSFSezione INFN, Université di Napoli "Federico II'', 80126 Napoli, Italy
Received: 30 July 1999 / Revised version: 22 November 1999 Communicated by P. Schuck
Abstract
Proton and deuteron correlation functions have been investigated with both impact
parameter and emission source selections. The correlations of the system
129Xe+NatSnat 50 AMeV have been measured with the 4
INDRA which provides a complete
kinematical description of each event. The emission time scale analyzed with
a quantum model reveals the time sequence of the light particles emitted by
the projectile-like fragment. The short and constant emission time of the proton,
independent of the impact parameter, can be attributed to a preequilibrium process.
Copyright Società Italiana di Fisica, Springer-Verlag 2000
