Semiclassical approach to sequential fission in peripheral collisions

2014 ◽  
Vol 23 (12) ◽  
pp. 1450081 ◽  
Author(s):  
A. Strazzeri ◽  
A. Italiano
Keyword(s):  
Closed Form ◽  
Heavy Ion ◽  
Heavy Ion Collision ◽  
Semiclassical Approach ◽  
Peripheral Collision ◽  
Polarization Effects ◽  
Peripheral Collisions ◽  
Ion Collision

A closed-form semiclassical approach describing in a single picture both the evaporation component and the fast nonequilibrium component of the sequential fission of projectile-like (PL) fragments in a peripheral heavy-ion collision is derived and then applied to the dynamical fission observed in the 124 Sn +64 Ni peripheral collision at 35A MeV. Information on opposite polarization effects of the fissioning PL fragments and on "dynamical fission lifetimes" are obtained.

Dynamical fission following peripheral heavy-ion collisions

2016 ◽  
Vol 25 (02) ◽  
pp. 1650011
Author(s):  
A. Strazzeri ◽  
A. Italiano
Keyword(s):  
Reaction Mechanism ◽  
Closed Form ◽  
Theoretical Approach ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Heavy Ion Collision ◽  
Polarization Effects ◽  
Fast Fission ◽  
Ion Collisions ◽  
Ion Collision

A closed-form theoretical approach describing in a single picture both the evaporation component and the fast nonequilibrium component of the sequential fission of projectile-like fragments in a peripheral heavy-ion collision is derived and then applied to the dynamical fission observed in the [Formula: see text]+[Formula: see text] semiperipheral collision at 35A[Formula: see text]MeV. Information on the reaction mechanism is obtained such as the opposite polarization effects and the estimate of the “formation-to-fast fission lifetimes” of the fissioning fragment.

scholarly journals Determination of geometry of heavy ion collisions with forward hadron calorimeter (FHCal) at MPD/NICA

2019 ◽  
Vol 204 ◽  
pp. 07002 ◽  
Author(s):  
Alexander Ivashkin ◽  
Dmitry Finogeev ◽  
Marina Golubeva ◽  
Fedor Guber ◽  
Alexander Izvestnyy ◽  
...  
Keyword(s):  
Energy Deposition ◽  
Heavy Ion ◽  
Reaction Plane ◽  
Heavy Ion Collision ◽  
Collision Point ◽  
Ion Collisions ◽  
Peripheral Collisions ◽  
Ion Collision ◽  
Energy Asymmetry

The main purpose of the FHCal is to provide an experimental measurement of a heavy-ion collision centrality (impact parameter) and orientation of its reaction plane. FHCal consists of two identical arms placed at the left/right sides from the beam collision point. Due to the fine modular structure and detection of spectators in both forward/backward regions, the angular resolution of the reaction plane reconstruction is below 30 degrees. Since the heavy fragments escape into beam holes, it is not possible to distinguish the central and peripheral collisions using only the deposited energies in FHCal. The subdivision of the calorimeter into two, inner and outer parts, and the calculation of the energy depositions separately in these calorimeter parts allow one to construct a new observable, the energy asymmetry. Taking the two-dimensional correlation between the energy asymmetry and full energy deposition in the calorimeter, it would be possible to resolve the ambiguity in the centrality determination.

DYNAMICAL DISPERSION IN THE FAST-PARTICLE EMISSION AFTER PERIPHERAL HEAVY-ION COLLISIONS

2007 ◽  
Vol 16 (01) ◽  
pp. 149-168
Author(s):  
A. ITALIANO ◽  
A. STRAZZERI
Keyword(s):  
Reaction Mechanism ◽  
Theoretical Model ◽  
Closed Form ◽  
Angular Correlation ◽  
Heavy Ion ◽  
Particle Emission ◽  
Inelastic Collisions ◽  
Heavy Ion Collision ◽  
Ion Collisions ◽  
Ion Collision

The closed-form theoretical model, already employed to successfully describe in a single picture, the nonequilibrium component and the evaporation component of the angular correlation between particles and reaction residues emitted in a peripheral heavy-ion collision, is here revisited. This revised approach, applied to the C-α differential multiplicities for the 16O+58Ni at 6 MeV/A and 16O+48Ti at 8.3 MeV/A deep inelastic collisions, allows to explain more in detail the reaction mechanism of such processes.

Collision geometry and particle production in high energy heavy ion collision experiments

2008 ◽  
Vol 32 (4) ◽  
pp. 308-328
Author(s):  
Wang Ya-Ping ◽  
Zhou Dai-Mei ◽  
Huang Rui-Dian ◽  
Cai Xu
Keyword(s):  
Particle Production ◽  
Heavy Ion ◽  
High Energy ◽  
Heavy Ion Collision ◽  
Ion Collision

Dynamical model for neck formation in the entrance channel of a heavy ion collision

1982 ◽  
Vol 306 (4) ◽  
pp. 307-313 ◽  
Author(s):  
S. K. Samaddar ◽  
B. C. Samanta ◽  
D. Sperber ◽  
M. Zielińska-Pfabé
Keyword(s):  
Heavy Ion ◽  
Entrance Channel ◽  
Dynamical Model ◽  
Heavy Ion Collision ◽  
Neck Formation ◽  
Ion Collision

Study and Investigation of Hard Photons Emission in Heavy Ion Collisions

2021 ◽  
Vol 19 (2) ◽  
pp. 61-65
Author(s):  
Taghreed A. Younis ◽  
Hadi J.M. Al-Agealy
Keyword(s):  
Critical Temperature ◽  
Quark Gluon Plasma ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Gluon Plasma ◽  
Heavy Ion Collision ◽  
Hard Photon ◽  
Ion Collisions ◽  
Strength Models ◽  
Ion Collision

This work involves hard photon rate production from quark -gluon plasma QGP interaction in heavy ion collision. Using a quantum chromodynamic model to investigate and calculation of photons rate in 𝑐𝑔 → 𝑠𝑔𝛾 system due to strength coupling, photons rate, temperature of system, flavor number and critical. The photons rate production computed using the perturbative strength models for QGP interactions. The strength coupling was function of temperature of system, flavor number and critical temperature. Its influenced by force with temperature of system, its increased with decreased the temperature and vice versa. The strength coupling has used to examine the confinement and deconfinement of quarks in QGP properties and influence on the photon rate production. In our approach, we calculate the photons rate depending on the strength coupling, photons rate and temperature of system with other factors. The results plotted as a function of the photons energy. The photons rate was decreased with increased temperature and increased with decreased with strength coupling.

scholarly journals Bremsstrahlung pair production in relativistic heavy ion collision

1998 ◽  
Vol 2 (4) ◽  
pp. 741 ◽  
Author(s):  
Helmar Meier ◽  
Kai Hencken ◽  
Dirk Trautmann ◽  
Gerhard Baur
Keyword(s):  
Pair Production ◽  
Heavy Ion ◽  
Heavy Ion Collision ◽  
Relativistic Heavy Ion Collision ◽  
Ion Collision
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