UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS

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2024-11-22 2:02
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Conference: Bucharest University Faculty of Physics 2003 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Some coments on the behaviour of the excited nuclear matter formed in nuclear collisions at high energies


Authors:
Calin BESLIU*, Alexandru JIPA*, Dan ARGINTARU**, Florin CONSTANTIN***, Daniel FELEA****, Ion Sorin ZGURA****, Catalin RISTEA****, Oana RISTEA*, Bogdan ILIESCU*, Emil STAN****, Elena STEFAN****, Marius CALIN*, Ionut ARSENE*, Ciprian MITU*, Mihai POTLOG*, Amelia HORBUNIEV*****, Cristian BORDEIANU******, Ion RO?U*******, Costin CARAMARCU*, Silvia OCHESANU*, Madalin CHERCIU*, Alexandru CALISTRU*, Tiberiu ESANU*


Affiliation:
* Atomic and Nuclear Physics Department, Faculty of Physics, University of Bucharest, ROMANIA

E-mail: jipa@brahms.fizica.unibuc.ro

** University of Civile Marine Constan?a, ROMANIA

*** Institute of Nuclear Physics and Engineering Bucharest-M?gurele, ROMANIA

**** Institute of Space Sciences Bucharest-M?gurele, ROMANIA

***** ?I.L.Caragiale? High School Bucharest, ROMANIA

****** Technological High School Cāmpulung Moldovenesc, ROMANIA

******* ?T.Arghezi? High School Craiova, ROMANIA


E-mail


Keywords:


Abstract:
In the last years many experiments have been performed at different laboratories to investigate the behaviour of the nuclear matter formed in nuclear collisions at high energies. Therefore, many experimental results are in present available. For explaining these experimental results a lot of models have been proposed. A very large number of concepts have been used. Taking into account some own experimental results obtained in proton-nucleus and nucleus-nucleus collisions at energies between a few A GeV and a few hundred A GeV we comments in the frame a phenomenological geometric picture the main experimental results on charged particle multiplicities, participants, cross sections, momentum spectra, temperature slopes, nuclear matter flow, size and structure of the participant regions, antiparticle to particle ratios and chemical potential. Some jumps in the depenedencies of some interesting physical quantities on the available energies in te centre of mass system can be reported. Trends to behaviours like-saturation of some physical quantities are observed, too. Therefore, some connections with the possible phase transitions in nuclear are included. A few specific signals of different phase transitions in nuclear matter are suggested.