DYNAMICAL EVOLUTION OF THE 197Au + 197Au SYSTEM AT 15 MeV/NUCLEON-Reference-Cited by-同舟云学术

DYNAMICAL EVOLUTION OF THE 197Au + 197Au SYSTEM AT 15 MeV/NUCLEON

Published:2006-03 Issue:02 Volume:15 Page:495-499
ISSN:0218-3013
Container-title:International Journal of Modern Physics E
language:en
Short-container-title:Int. J. Mod. Phys. E

Author:

SKWIRA-CHALOT I.¹,SIWEK-WILCZYŃSKA K.¹,WILCZYŃSKI J.²,AMORINI F.³,ANZALONE A.³,AUDITORE L.⁴,BARAN V.³,BRZYCHCZYK J.⁵,CARDELLA G.⁶,CAVALLARO S.³,CHATTERJEE M. B.⁷,COLONNA M.³,DE FILIPPO E.⁶,DI TORO M.³,GRZESZCZUK A.⁸,GUAZZONI P.⁹,KOWALSKI S.⁸,LA GUIDARA E.³,LANZANO G.²,LANZALONE G.⁶,MAIOLINO C.³,MAJKA Z.⁵,NICOLIS N. G.¹⁰,PAGANO A.⁶,PAPA M.⁶,PIASECKI E.¹,PIRRONE S.⁶,PŁANETA R.⁵,POLITI G.⁶,PORTO F.³,RIZZO F.³,RUSSOTTO P.³,SCHMIDT K.⁸,SOCHOCKA A.⁵,ŚWIDERSKI Ł.¹,TRIFIRÒ A.⁴,TRIMARCHI M.⁴,ZETTA L.⁹,ZIPPER W.⁸

Affiliation:

1. Institute of Experimental Physics, Warsaw University, Warsaw, Poland

2. A. Sołtan Institute for Nuclear Studies, Świerk/Warsaw, Poland

3. INFN, Laboratori Nazionali del Sud and Dipartimento di Fisica e Astronomia, Università di Catania, Italy

4. INFN, Gruppo Collegato di Messina and Dipartimento di Fisica, Università di Messina, Italy

5. M. Smoluchowski Institute of Physics, Jagellonian University, Cracow, Poland

6. INFN, Sezione di Catania and Dipartimento di Fisica e Astronomia, Università di Catania, Italy

7. Saha Institute of Nuclear Physics, Kolkata, India

8. Institute of Physics, University of Silesia, Katowice, Poland

9. INFN, Sezione di Milano and Dipartimento di Fisica, Università di Milano, Italy

10. Departament of Physics, University of Ioannina, Ioannina, Greece

Abstract

Collisions of a very heavy 197 Au + 197 Au system have been studied at an energy of 15 MeV/nucleon with the aim to investigate a possible change of the energy dissipation mechanism from one-body dissipation (presumably dominating at low excitation energies) to two-body dissipation. The experiment was carried out in 4π geometry using the CHIMERA multidetector array. A class of ternary events satisfying nearly complete balance of mass numbers was selected. Preliminary results suggest that the selected ternary events represent mostly prompt ternary partitions of the colliding system, in which the lightest fragment is quite massive. In the light of theoretical predictions of Cârjan, Sierk and Nix this result may imply that the observed ternary reactions are driven by the two-body dissipation mechanism already at 15 MeV/nucleon.

Publisher

World Scientific Pub Co Pte Lt

Subject

General Physics and Astronomy,Nuclear and High Energy Physics

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0218301306004429

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