Analysis for Cross Sections of (p,xn) Reactions on208Pb at Intermediate Energies by Using Quantum Molecular Dynamics

2002 ◽  
Vol 142 (2) ◽  
pp. 195-202 ◽  
Author(s):  
Sheng Fan ◽  
Zhuaxia Li ◽  
Zhixiang Zhao
Keyword(s):  
Molecular Dynamics ◽  
Cross Sections ◽  
Quantum Molecular Dynamics ◽  
Intermediate Energies

SIGMA MESON PRODUCTION IN HEAVY ION COLLISIONS AT INTERMEDIATE ENERGIES

2007 ◽  
Vol 22 (32) ◽  
pp. 6219-6226
Author(s):  
PORNRAD SRISAWAD ◽  
YU-MING ZHENG ◽  
CHRISTIAN FUCHS ◽  
AMAND FAESSLER ◽  
YUPENG YAN ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Meson Production ◽  
Heavy Ion ◽  
Mass Shift ◽  
Quantum Molecular Dynamics ◽  
Final State ◽  
Intermediate Energies ◽  
Simulation Results ◽  
Proton Induced Reactions

The production of the sigma (σ) meson is investigated in the quantum molecular dynamics model for the p+A reactions with the nuclei A being 12 C , 40 Ca and 208 Pb at the incident proton energies Ep = 1.50 GeV . The simulation results indicates a distinctive A dependence of the sigma production, that is, the increase of A is followed by an increase of the production cross-sections. The σ meson production in proton induced reactions is strongly medium-dependent, and the produced σ mesons decaying in a denser medium experience a stronger mass shift towards lower masses. This mass shift is an experimentally accessible observable in the final state pion pairs which did not suffer reabsorption by the surrounding nucleons. It is pointed out that the ratio of the simulation results of measurable σ mesons (in the form of two pions) cross-sections as a function of the sigma invariant-mass from various reactions opens the possibility to address experimentally the mass shift of the σ in a dense nuclear environment.

On the inadequate equilibrium accomplished in mass asymmetric reactions at intermediate energies

2018 ◽  
Vol 33 (34) ◽  
pp. 1850201 ◽  
Author(s):  
Deepshikha ◽  
Suneel Kumar
Keyword(s):  
Molecular Dynamics ◽  
Incident Energy ◽  
Asymmetric Reactions ◽  
Quantum Molecular Dynamics ◽  
Dynamics Model ◽  
Nuclear Stopping ◽  
Mass Asymmetry ◽  
Intermediate Energies

The isospin-dependent quantum molecular dynamics model has been employed to explore the participant–spectator matter. Simulations have been carried out over the whole colliding geometry for mass asymmetric reactions. The degree of nuclear stopping depends strongly on the mass of the projectile, incident energy as well as on the colliding geometry of the reaction. It has been predicted that effect of mass asymmetry can be compensated by varying the colliding geometry.

scholarly journals Analysis of proton-induced fragment production cross sections by the quantum molecular dynamics plus statistical decay model

1996 ◽  
Vol 54 (1) ◽  
pp. 285-291 ◽  
Author(s):  
Satoshi Chiba ◽  
Osamu Iwamoto ◽  
Tokio Fukahori ◽  
Koji Niita ◽  
Toshiki Maruyama ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Cross Sections ◽  
Production Cross ◽  
Quantum Molecular Dynamics ◽  
Statistical Decay ◽  
Decay Model ◽  
Fragment Production

Quantum molecular-dynamics approach to heavy-ion collisions with Brueckner G-matrix cross sections

1989 ◽  
Vol 494 (2) ◽  
pp. 349-364 ◽  
Author(s):  
A. Bohnet ◽  
N. Ohtsuka ◽  
J. Aichelin ◽  
R. Linden ◽  
Amand Faessler
Keyword(s):  
Molecular Dynamics ◽  
Cross Sections ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Quantum Molecular Dynamics ◽  
Ion Collisions

Probing the Effect of Different Cross Sections in Asymmetric Systems

2012 ◽  
Vol 57 (8) ◽  
pp. 806
Author(s):  
D. Kaur ◽  
V. Kaur ◽  
S. Kumar
Keyword(s):  
Molecular Dynamics ◽  
Energy Range ◽  
Nuclear Reaction ◽  
Cross Sections ◽  
Theoretical Study ◽  
Reaction Dynamics ◽  
Heavy Ion ◽  
Quantum Molecular Dynamics ◽  
Mass Asymmetry ◽  
Iqmd Model

We present a complete systematic theoretical study of the multifragmentation for asymmetric colliding nuclei in heavy-ion reactions in the energy range between 50 and 1000 MeV/nucleon by using the isospin-dependent quantum molecular dynamics (IQMD) model. We have observed an interesting outcome for asymmetric colliding nuclei. The comparison between the symmetric and asymmetric colliding nuclei for the isospin-independent and isospin-dependent cross sections has been performed. We have found the pronounced effect of different cross sections and mass asymmetry on the nuclear reaction dynamics.

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