Fragment charge correlations and spinodal decomposition in finite nuclear systems

  • G. Tabacaru
  • B. Borderie
  • P. Désesquelles
  • M. Pârlog
  • M. F. Rivet
  • R. Bougault
  • B. Bouriquet
  • A. M. Buta
  • E. Galichet
  • B. Guiot
  • P. Lautesse
  • N. Le Neindre
  • L. Manduci
  • E. Rosato
  • B. Tamain
  • M. Vigilante
  • J. P. Wieleczko
OriginalPaper

Abstract.

Enhanced production of events with almost equal-sized fragments is experimentally revealed by charge correlations in the multifragmentation of a finite nuclear system selected in 129Xe central collisions on nat Sn. The evolution of their weight with the incident energy: 32, 39, 45, 50 AMeV, is measured. Dynamical stochastic mean-field simulations performed at 32 AMeV, in which spinodal instabilities are responsible for multifragmentation, exhibit a similar enhancement of this kind of events. The above experimental observation evidences the spinodal decomposition of hot finite nuclear matter as the origin of multifragmentation in the Fermi energy regime.

Keywords

Experimental Observation Fermi Energy Nuclear Matter Incident Energy Spinodal Decomposition 

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2003

Authors and Affiliations

  • G. Tabacaru
    • 1
    • 2
  • B. Borderie
    • 1
  • P. Désesquelles
    • 1
  • M. Pârlog
    • 1
    • 2
  • M. F. Rivet
    • 1
  • R. Bougault
    • 3
  • B. Bouriquet
    • 4
  • A. M. Buta
    • 3
  • E. Galichet
    • 1
    • 5
  • B. Guiot
    • 4
  • P. Lautesse
    • 6
  • N. Le Neindre
    • 4
  • L. Manduci
    • 3
  • E. Rosato
    • 7
  • B. Tamain
    • 3
  • M. Vigilante
    • 7
  • J. P. Wieleczko
    • 4
  1. 1.Institut de Physique NucléaireIN2P3-CNRSOrsay cedexFrance
  2. 2.National Institute for Physics and Nuclear EngineeringBucharest-MagureleRomania
  3. 3.LPC, IN2P3-CNRS, ENSICAEN et UniversitéCaen cedexFrance
  4. 4.GANIL, CEA et IN2P3-CNRSCaen cedexFrance
  5. 5.Conservatoire National des Arts et MétiersParis cedex 03France
  6. 6.Institut de Physique NucléaireIN2P3-CNRS et UniversitéVilleurbanne cedexFrance
  7. 7.Dipartimento di Scienze Fisiche e Sezione INFNUniversitá di Napoli “Federico II”NapoliItaly

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