IMPACT-PARAMETER DEPENDENCE OF TERNARY AND QUATERNARY RESEPARATION OF HEAVY COLLIDING SYSTEMS

2010 ◽  
Vol 19 (04) ◽  
pp. 713-717
Author(s):  
◽  
I. SKWIRA-CHALOT ◽  
K. SIWEK-WILCZYŃSKA ◽  
J. WILCZYŃSKI
Keyword(s):  
Reaction Mechanism ◽  
Impact Parameter ◽  
Inelastic Collisions ◽  
Parameter Dependence ◽  
Additional Analysis ◽  
Peripheral Collisions ◽  
Deep Inelastic Reactions ◽  
The Impact ◽  
Comparable Size

Recently, we reported on the observation of a new reaction mechanism of fast collinear breakup of the 197 Au + 197 Au system into three and four fragments of comparable size. Here we present results of an additional analysis that shows that these ternary and quaternary breakup reactions occur at extremely deep-inelastic collisions corresponding to small values of the impact parameter, while more peripheral collisions lead to well known binary deep-inelastic reactions.

scholarly journals Impact Parameter Dependence ofπ-/π+Ratio in Probing the Nuclear Symmetry Energy Using Heavy-Ion Collisions

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Gao-Feng Wei ◽  
Guo-Qiang He ◽  
Xin-Wei Cao ◽  
Yi-Xin Lu
Keyword(s):  
Impact Parameter ◽  
Symmetry Energy ◽  
Heavy Ion Collisions ◽  
Transport Model ◽  
Heavy Ion ◽  
Parameter Dependence ◽  
Central Collisions ◽  
Ion Collisions ◽  
Peripheral Collisions ◽  
The Impact

The impact parameter dependence ofπ-/π+ratio is examined in heavy-ion collisions at 400 MeV/nucleon within a transport model. It is shown that the sensitivity ofπ-/π+ratio on symmetry energy shows a transition from central to peripheral collisions; that is, the stiffer symmetry energy leads to a largerπ-/π+ratio in peripheral collisions while the softer symmetry energy always leads this ratio to be larger in central collisions. After checking the kinematic energy distribution ofπ-/π+ratio, we found this transition of sensitivity ofπ-/π+ratio to symmetry energy is mainly from less energetic pions; that is, the softer symmetry energy gets the less energetic pions to form a smallerπ-/π+ratio in peripheral collisions while these pions generate a largerπ-/π+ratio in central collisions. Undoubtedly, the softer symmetry energy can also lead more energetic pions to form a largerπ-/π+ratio in peripheral collisions. Nevertheless, considering that most of pions are insufficiently energetic at this beam energy, we therefore suggest theπ-/π+ratio as a probe of the high-density symmetry energy effective only in central at most to midcentral collisions, thereby avoiding the possible information of low-density symmetry energy carried inπ-/π+ratio from peripheral collisions.

scholarly journals A note on the relations between elastic and inelastic interactions and increasing ratio σel(s)/σtot(s) at the LHC

2019 ◽  
Vol 34 (32) ◽  
pp. 1950259 ◽  
Author(s):  
S. M. Troshin ◽  
N. E. Tyurin
Keyword(s):  
Elastic Scattering ◽  
Energy Dependence ◽  
Impact Parameter ◽  
Cross Sections ◽  
Parameter Dependence ◽  
Slope Parameter ◽  
Short Notice ◽  
Inelastic Interactions ◽  
The Impact ◽  
Mode A

We comment briefly on relations between the elastic and inelastic cross-sections valid for the shadow and reflective modes of the elastic scattering. Those are based on the unitarity arguments. It is shown that the redistribution of the probabilities of the elastic and inelastic interactions (the form of the inelastic overlap function becomes peripheral) under the reflective scattering mode can lead to increasing ratio of [Formula: see text] at the LHC energies. In the shadow scattering mode, the mechanism of this increase is a different one, since the impact parameter dependence of the inelastic interactions probability is central in this mode. A short notice is also given on the slope parameter and the leading contributions to its energy dependence in both modes.

Investigation of the impact-parameter dependence of electrons emitted in 30-, 100-, 350-keVH+and 100-keV3He2++Ar collisions

1987 ◽  
Vol 35 (2) ◽  
pp. 598-606 ◽  
Author(s):  
G. Schiwietz ◽  
U. Stettner ◽  
T. J. M. Zouros ◽  
N. Stolterfoht
Keyword(s):  
Impact Parameter ◽  
Parameter Dependence ◽  
The Impact

STUDY OF FORWARD–BACKWARD SHOWER PARTICLE AND SLOW PROTON PRODUCTION FROM THE INTERACTIONS OF 7Li WITH EMULSION NUCLEI AT 3 A GeV/c

2002 ◽  
Vol 11 (02) ◽  
pp. 105-117 ◽  
Author(s):  
N. N. ABD-ALLAH
Keyword(s):  
Impact Parameter ◽  
Mass Number ◽  
Charged Particles ◽  
Parameter Dependence ◽  
Shower Particle ◽  
Experimental Factor ◽  
Proton Production ◽  
Correlation Strength ◽  
The Impact

The correlations between the multiplicities of secondary charged particles emitted in collisions of 3 A GeV/c 7 Li with emulsion have been studied. The dependence of the correlation strength on the mass number of the projectile has been analyzed. Moreover, the dependence of the average multiplicities of shower particle emitted in the forward and backward hemispheres on the number of target fragments has been investigated. The study of the number of backward slow protons (black and grey particles) indicates that, while the number of backward particles is a good factor representing the purely target fragments, the number of backward grey particles can be considered an accurate experimental factor for the impact parameter dependence of the collision.

The Impact Parameter Dependence of the Disappearance of Flow

1996 ◽  
pp. 171-177
Author(s):  
R. Pak ◽  
W. J. Llope ◽  
D. Craig ◽  
E. E. Gualtieri ◽  
S. A. Hannuschke ◽  
...  
Keyword(s):  
Impact Parameter ◽  
Parameter Dependence ◽  
The Impact
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