Collective mechanism for nuclear stopping and transverse flow in heavy-ion collisions

Pramana ◽  
1994 ◽  
Vol 43 (4) ◽  
pp. 307-312 ◽  
Author(s):  
Jitesh R Bhatt ◽  
Predhiman K Kaw ◽  
Jitendra C Parikh
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Transverse Flow ◽  
Nuclear Stopping ◽  
Ion Collisions

AVERAGE PROPERTY OF FRAGMENTATION REACTION AND MOMENTUM DISSIPATION INDUCED BY HALO-NUCLEI IN HEAVY ION COLLISIONS

2006 ◽  
Vol 15 (05) ◽  
pp. 1069-1086
Author(s):  
JIAN-YE LIU ◽  
WEN-JUN GUO ◽  
ZHONG-ZHOU REN ◽  
WEI ZUO ◽  
XI-GUO LEE ◽  
...  
Keyword(s):  
Density Distribution ◽  
Heavy Ion Collisions ◽  
Halo Nucleus ◽  
Heavy Ion ◽  
Halo Nuclei ◽  
Fragmentation Reaction ◽  
Quantum Molecular Dynamics ◽  
Nuclear Stopping ◽  
Density Distributions ◽  
Ion Collisions

We study systematically the average property of fragmentation reaction and momentum dissipation induced by halo-nuclei in intermediate energy heavy ion collisions for different colliding systems and different beam energies within the isospin dependent quantum molecular dynamics model (IQMD). This study is based on the extended halo-nucleus density distributions, which indicates the average property of loosely inner halo nucleus structure, because the interaction potential and in-medium nucleon-nucleon cross section in IQMD model depend on the density distribution. In order to study the average properties of fragmentation reaction and momentum dissipation induced by halo-nuclei we also compare the results for the halo-nuclear colliding systems with those for corresponding stable colliding systems with same mass under the same incident channel condition. We find that the effect of extended halo density distribution on the fragment multiplicity and nuclear stopping (momentum dissipation) are important for the different beam energies and different colliding systems. For example the extended halo density distributions increase the fragment multiplicity but decrease the nuclear stopping for all of incident channel conditions in this paper.

Nuclear stopping in heavy-ion collisions at 100 MeV/nucleon from inclusive and exclusive neutral pion measurements

1996 ◽  
Vol 53 (4) ◽  
pp. 1782-1791 ◽  
Author(s):  
A. Badalà ◽  
R. Barbera ◽  
A. Palmeri ◽  
G. S. Pappalardo ◽  
F. Riggi ◽  
...  
Keyword(s):  
Heavy Ion Collisions ◽  
Neutral Pion ◽  
Heavy Ion ◽  
Nuclear Stopping ◽  
Ion Collisions

A scheme to identify collective transverse flow in relativistic heavy ion collisions at CERN SPS

1996 ◽  
Vol 379 (1-4) ◽  
pp. 54-59 ◽  
Author(s):  
Dinesh Kumar Srivastava ◽  
Sourav Sarkar ◽  
Pradip Kumar Roy ◽  
Dipali Pal ◽  
Bikash Sinha
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Transverse Flow ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions

Average transverse expansion velocities and global freeze-out temperatures in central Cu + Cu, Au + Au, and Pb + Pb collisions at high energies at RHIC and LHC

2020 ◽  
Vol 35 (14) ◽  
pp. 2050115 ◽  
Author(s):  
Khusniddin K. Olimov ◽  
Shakhnoza Z. Kanokova ◽  
Kosim Olimov ◽  
Kadyr G. Gulamov ◽  
Bekhzod S. Yuldashev ◽  
...  
Keyword(s):  
Blast Wave ◽  
Heavy Ion Collisions ◽  
Wave Model ◽  
Heavy Ion ◽  
Transverse Flow ◽  
Collision System ◽  
Transverse Expansion ◽  
Ion Collisions ◽  
Charged Pions ◽  
Freeze Out

The experimental invariant transverse momentum [Formula: see text] spectra of the charged pions and kaons, protons and antiprotons, produced at midrapidity in central (0–10%) Au[Formula: see text]Au collisions at [Formula: see text], central (0–10%) Cu[Formula: see text]Cu collisions at [Formula: see text], central (0–10%) Au[Formula: see text]Au collisions at [Formula: see text], and central (0–5%) Pb[Formula: see text]Pb collisions at [Formula: see text], measured by BRAHMS, STAR and ALICE collaborations, were analyzed using three different transverse expansion (blast-wave) models: Siemens–Rasmussen blast-wave model, Simple transverse flow model, and Simplified (hydro-inspired) blast-wave model of Schnedermann et al. Combined (simultaneous) minimum [Formula: see text] fits of the experimental invariant [Formula: see text] spectra of the charged pions and kaons, protons and antiprotons with the above three model functions were conducted, using the identical selected optimal fitting ranges in [Formula: see text] in each studied collision system, and the values of the average transverse expansion velocity [Formula: see text] and global kinetic freeze-out temperature [Formula: see text] and their dependencies on the collision system [Formula: see text] and [Formula: see text] were extracted. The combined (simultaneous) fits using Hagedorn formula with the (embedded) simple transverse flow describe well the experimental invariant [Formula: see text] spectra of the charged pions, kaons, protons and antiprotons in the whole measured range in region [Formula: see text] in the analyzed central heavy ion collisions at RHIC and LHC, reproducing qualitatively well all the established dependencies of the parameters [Formula: see text] and [Formula: see text] on the collision system [Formula: see text] and [Formula: see text]. The obtained results were compared with those of the previous analyses of high energy heavy ion collisions.

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