INCOMPRESSIBILITY AND REACTIONS INDUCED BY WEAKLY BOUND PROJECTILE, 9Be

2012 ◽  
Vol 27 (24) ◽  
pp. 1250133 ◽  
Author(s):  
O. N. GHODSI ◽  
S. A. SEYYEDI ◽  
S. MOHAMMADI
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Nucleon Nucleon ◽  
Repulsive Force ◽  
Repulsive Interaction ◽  
Repulsive Core ◽  
Complete Fusion ◽  
Nucleon Force ◽  
Interaction Potentials ◽  
Weakly Bound

Using a nucleon–nucleon force of the type M3Y-Reid and an additional repulsive interaction which simulates the incompressibility effects of the nuclear matter, we have examined the effects of the repulsive core modeling on the interaction potentials and complete fusion cross-sections for 9 Be + 124 Sn and 9 Be + 89 Y systems. The adjusted parameters of this repulsive force have been chosen in such a way that fully explains the properties of the nuclear matter in the region where the nuclear densities of the interacting nuclei completely overlap. The results of our studies reveal that accounting for this correction in the calculations of the total potentials leads to improvement of calculated cross-sections and affects on the complete fusion suppression at above barrier energies.

Nucleon-nucleon cross sections in nuclear matter

1997 ◽  
Vol 55 (6) ◽  
pp. 3006-3014 ◽  
Author(s):  
H.-J. Schulze ◽  
A. Schnell ◽  
G. Röpke ◽  
U. Lombardo
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Nucleon Nucleon

scholarly journals Isospin Physics in Heavy-Ion Collisions at Intermediate Energies

1998 ◽  
Vol 07 (02) ◽  
pp. 147-229 ◽  
Author(s):  
Bao-An Li ◽  
Che Ming Ko ◽  
Wolfgang Bauer
Keyword(s):  
Equation Of State ◽  
Nuclear Matter ◽  
Cross Sections ◽  
Heavy Ion Collisions ◽  
Transport Model ◽  
Transient State ◽  
Heavy Ion ◽  
Nucleon Nucleon ◽  
Asymmetric Nuclear Matter ◽  
Ion Collisions

In nuclear collisions induced by stable or radioactive neutron-rich nuclei a transient state of nuclear matter with an appreciable isospin asymmetry as well as thermal and compressional excitation can be created. This offers the possibility to study the properties of nuclear matter in the region between symmetric nuclear matter and pure neutron matter. In this review, we discuss recent theoretical studies of the equation of state of isospin-asymmetric nuclear matter and its relations to the properties of neutron stars and radioactive nuclei. Chemical and mechanical instabilities as well as the liquid-gas phase transition in asymmetric nuclear matter are investigated. The in-medium nucleon-nucleon cross sections at different isospin states are reviewed as they affect significantly the dynamics of heavy ion collisions induced by radioactive beams. We then discuss an isospin-dependent transport model, which includes different mean-field potentials and cross sections for the proton and neutron, and its application to these reactions. Furthermore, we review the comparisons between theoretical predictions and available experimental data. In particular, we discuss the study of nuclear stopping in terms of isospin equilibration, the dependence of nuclear collective flow and balance energy on the isospin-dependent nuclear equation of state and cross sections, the isospin dependence of total nuclear reaction cross sections, and the role of isospin in preequilibrium nucleon emissions and subthreshold pion production.

MEASUREMENT OF DIFFERENTIAL CROSS SECTIONS AND VECTOR ANALYZING POWERS FOR THE ${\vec n}d$ REACTION AT 250 MEV

2003 ◽  
Vol 18 (02n06) ◽  
pp. 298-301
Author(s):  
Y. MAEDA ◽  
H. SAKAI ◽  
A. TAMII ◽  
S. SAKODA ◽  
H. KATO ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Sections ◽  
Differential Cross ◽  
Nucleon Nucleon ◽  
Coulomb Effect ◽  
Differential Cross Sections ◽  
Nucleon Force ◽  
Test Experiment ◽  
Angular Region ◽  
Analyzing Powers

To study the three-nucleon force (3NF) effects without ambiguities from the Coulomb effect, the differential cross sections and the vector analyzing powers for the [Formula: see text] elastic scattering at En = 245 MeV have been measured at θcm = 85° - 180°. The data are compared to the results of Faddeev calculations using modern nucleon-nucleon (NN) forces with and without 3NF. Additionally we have a plan to extend our measurement to the forward angular region where the Coulomb effect is expected to be large. We carried out the test experiment and measured the differential cross sections at θcm = 21°.

NUCLEON-NUCLEON CROSS SECTIONS IN ISOSPIN ASYMMETRIC NUCLEAR MATTER

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1788-1793
Author(s):  
HONGFEI ZHANG ◽  
JIANMIN DONG ◽  
WEI ZUO ◽  
UMBERTO LOMBARDO
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Nucleon Nucleon ◽  
Density Region ◽  
Proton Proton ◽  
Asymmetric Nuclear Matter ◽  
Hartree Fock ◽  
Nucleon Nucleon Interaction ◽  
Three Body ◽  
Neutron Cross Sections

The in medium nucleon-nucleon (NN) cross sections in isospin asymmetric nuclear matter at various densities are investigated in the framework of Brueckner-Hartree-Fock theory with the Bonn B two-body nucleon-nucleon interaction supplemented with a new version microscopic three-body force (TBF). The TBF depresses the amplitude of cross sections at high density region. At low densities, the proton-proton and neutron-neutron cross sections decrease while the proton-neutron one increases as the asymmetry increases. But the sensitivity of the NN cross sections to the isospin asymmetry are reduced with the increasing density.

Microscopic Three-Body Force Effect on Nucleon-Nucleon Cross Sections in Symmetric Nuclear Matter

2008 ◽  
Vol 50 (5) ◽  
pp. 1219-1224
Author(s):  
Zhang Hong-Fei ◽  
Zuo Wei ◽  
Lombardo Umberto ◽  
Li Zeng-Hua ◽  
Li Jun-Qing
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Body Force ◽  
Nucleon Nucleon ◽  
Symmetric Nuclear Matter ◽  
Force Effect ◽  
Three Body

Nucleon-nucleon cross sections in dense nuclear matter

2007 ◽  
Vol 76 (5) ◽  
Author(s):  
H. F. Zhang ◽  
Z. H. Li ◽  
U. Lombardo ◽  
P. Y. Luo ◽  
F. Sammarruca ◽  
...  
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Nucleon Nucleon ◽  
Dense Nuclear Matter

In-medium nucleon-nucleon cross sections from nonrelativistic reaction matrices in nuclear matter

1998 ◽  
Vol 57 (6) ◽  
pp. 3495-3498 ◽  
Author(s):  
M. Kohno ◽  
M. Higashi ◽  
Y. Watanabe ◽  
M. Kawai
Keyword(s):  
Nuclear Matter ◽  
Cross Sections ◽  
Nucleon Nucleon

scholarly journals Few-nucleon system dynamics studied via deuteron-deuteron collisions at 160 MeV

2020 ◽  
Author(s):  
Izabela Ciepał ◽  
Kazimierz Bodek ◽  
Nasser Kalantar Nayestanaki ◽  
Ghanshyambhai Khatri ◽  
Stanisław Kistryn ◽  
...  
Keyword(s):  
Cross Sections ◽  
Theoretical Calculations ◽  
Deuteron Beam ◽  
Proton Transfer Reaction ◽  
Nucleon Nucleon ◽  
P Wave ◽  
Nucleon Force ◽  
Nuclear Dynamics ◽  
Intermediate Energies ◽  
Three Body

Four nucleon scattering at intermediate energies provides unique opportunities to study effects of the two key ingredients of the nuclear dynamics, the nucleon-nucleon P-wave (NNP-wave) and the three-nucleon force (3NF). This is possible only with systematic and precise data, in conjunction with exact theoretical calculations. Using the BINA detector at KVI Groningen, the Netherlands, a rich set of differential cross section of the ^{2}2H(d,dp)n breakup reaction at 160 MeV deuteron beam energy has been measured. Besides the three-body breakup, also cross sections of the ^{2}2H(d, ^{3}3He)n proton transfer reaction have been obtained. The data are compared to the recent calculations for the three-cluster breakup.

THREE-NUCLEON INTERACTION DYNAMICS STUDIED VIA THE DEUTERON-PROTON BREAKUP

2011 ◽  
Vol 26 (03n04) ◽  
pp. 725-727 ◽  
Author(s):  
E. STEPHAN ◽  
St. KISTRYN ◽  
N. KALANTAR-NAYESTANAKI ◽  
A. BIEGUN ◽  
K. BODEK ◽  
...  
Keyword(s):  
Cross Sections ◽  
Coulomb Force ◽  
Nucleon Nucleon ◽  
Breakup Reaction ◽  
Nucleon Interaction ◽  
Nucleon Force ◽  
Analyzing Powers ◽  
Section Data ◽  
Detection Systems ◽  
Theoretical Predictions

Rich sets of high precision cross sections, vector and tensor analyzing powers for the [Formula: see text] breakup reaction were measured at 130 and 100 MeV beam energy with the use of detection systems covering large parts of the phase space. The cross section data allowed to establish evidences for three-nucleon force contributions and to confirm predictions of sizable effect of the Coulomb force in the breakup reaction. Analyzing power data are generally quite well described by theoretical predictions even with pure nucleon-nucleon interactions. However, in some regions discrepancies has been observed for tensor analyzing powers at 130 MeV.

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