EFFECT OF THE ADIABATIC VIBRATIONAL COUPLING ON THE FUSION OF THE 16O-238U INTERACTION

2003 ◽  
Vol 12 (06) ◽  
pp. 863-873 ◽  
Author(s):  
M. ISMAIL ◽  
M. OSMAN ◽  
KH. A. RAMADAN ◽  
W. SEIF
Keyword(s):  
Experimental Data ◽  
Density Dependence ◽  
Cross Section ◽  
Target Nucleus ◽  
Fusion Cross Section ◽  
Heavy Ion ◽  
Fusion Process ◽  
Vibrational Coupling ◽  
Vibrational Excitations

The effect of both rotation and vibration of a deformed target nucleus on the fusion cross-section and barrier distributions was studied. This was done in the framework of the microscopically derived heavy-ion (HI) potential. Moreover, the effect of target deformation up to β6 and the density dependence of the NN force on the fusion process was studied in the presence of vibrational excitations of the target. The results obtained were compared with experimental data.

Fusion and Breakup Reactions of 17S + 208Pb and 15C + 232ThHalo Nuclei Systems

2015 ◽  
Vol 11 (2) ◽  
pp. 2972-2978
Author(s):  
Fouad A. Majeed ◽  
Yousif A. Abdul-Hussien
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Fusion Reaction ◽  
Fusion Cross Section ◽  
Reaction Cross ◽  
Recent Experimental Data ◽  
Barrier Distribution ◽  
Coupled Channel ◽  
Total Fusion ◽  
Full Quantum

In this study the calculations of the total fusion reaction cross section have been performed for fusion reaction systems 17F + 208Pb and 15C + 232Th which involving halo nuclei by using a semiclassical approach.The semiclassical treatment is comprising the WKB approximation to describe the relative motion between target and projectile nuclei, and Continuum Discretized Coupled Channel (CDCC) method to describe the intrinsic motion for both target and projectile nuclei. For the same of comparsion a full quantum mechanical clacualtions have been preforemd using the (CCFULL) code. Our theorticalrestuls are compared with the full quantum mechaincialcalcuations and with the recent experimental data for the total fusion reaction  checking the stability of the distancesThe coupled channel calculations of the total fusion cross section σfus, and the fusion barrier distribution Dfus. The comparsion with experiment proves that the semiclassiacl approach adopted in the present work reproduce the experimental data better that the full quantal mechanical calcautions. 

IMPORTANCE OF DEFORMATION AND ORIENTATION OF NUCLEAR SHAPES FOR THE SYNTHESIS OF SUPER-HEAVY ELEMENTS

2004 ◽  
Vol 13 (01) ◽  
pp. 361-366 ◽  
Author(s):  
M. KOWAL ◽  
Z. ŁOJEWSKI
Keyword(s):  
Potential Energy ◽  
Cross Section ◽  
Heavy Ion Collisions ◽  
Fusion Cross Section ◽  
Heavy Ion ◽  
Heavy Elements ◽  
Axially Symmetric ◽  
Deformation Degree ◽  
Fusion Barrier ◽  
Ion Collisions

We are studying the potential energy describing the entrance channel of a heavy-ion collisions for the axially symmetric deformed and arbitrarily oriented nuclear shapes. The paper presents an analysis of the influence of different orientations of the deformed ions on the height and shape of the fusion barrier. The net effect of the deformation degree of freedom on the transmission at sub-barrier energies is to enhance the fusion cross section. This problem is very important especially in the perspective of the synthesis of super-heavy elements.

Effect of entrance channel on dynamics of heavy ions collision

2016 ◽  
Vol 25 (01) ◽  
pp. 1650005
Author(s):  
D. Naderi
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Heavy Ions ◽  
Fusion Cross Section ◽  
Evaporation Residue ◽  
Entrance Channel ◽  
Langevin Equations ◽  
Combined Model ◽  
Fission Process ◽  
Cross Section Formula

A combined dynamical model using concept of dinuclear systems (DNS) and one-dimensional (1D) Langevin equations was applied to investigate the effect of entrance channel on dynamics of heavy ions collision. The [Formula: see text]Si+[Formula: see text]Er, [Formula: see text]O+[Formula: see text]W and [Formula: see text]F+[Formula: see text]Ta reactions which formed the compound nucleus [Formula: see text]Pb have been considered to study this effect. We studied these reactions dynamically and calculated the ratio of evaporation residue cross-section to fusion cross-section [Formula: see text] as a tool for investigation of entrance channel effect. Results of combined model are compared with available experimental data and results of 1D Langevin equations. Obtained results based on combined model are in better agreement with experimental data in comparison with results of Langevin equations. We concluded for [Formula: see text]Si+[Formula: see text]Er and [Formula: see text]F+[Formula: see text]Ta reactions the results of combined model that support the quasi-fission process are different relative to Langevin dynamical approach, whereas for [Formula: see text]O+[Formula: see text]W system the two models give similar results.

DOUBLE HIGGS BOSON PRODUCTION VIA WW FUSION IN TeV e+e− COLLISIONS

1990 ◽  
Vol 05 (09) ◽  
pp. 667-674 ◽  
Author(s):  
V. BARGER ◽  
T. HAN
Keyword(s):  
Higgs Boson ◽  
Standard Model ◽  
Cross Section ◽  
Fusion Cross Section ◽  
Higgs Bosons ◽  
Fusion Process ◽  
Boson Production ◽  
High Luminosity ◽  
Higgs Boson Production ◽  
Event Rates

The production of two standard model Higgs bosons via the WW fusion process e+e− →[Formula: see text] would test the predicted HHH, HWW and HHWW couplings. At TeV energies this fusion cross section dominates over that from e+e− →ZHH and would give significant event rates for mH ≲ 1/2 MZ at high luminosity e+e− colliders. We evaluate the rates and present the dynamical distributions.

Heavy Ion SEU Cross Section Calculation Based on Proton Experimental Data, and Vice Versa

2014 ◽  
Vol 61 (6) ◽  
pp. 3564-3571 ◽  
Author(s):  
F. Wrobel ◽  
A. D. Touboul ◽  
V. Pouget ◽  
L. Dilillo ◽  
R. Ecoffet ◽  
...  
Keyword(s):  
Experimental Data ◽  
Cross Section ◽  
Heavy Ion

scholarly journals MECHANISMS PRODUCING FISSIONLIKE BINARY FRAGMENTS IN HEAVY ION COLLISIONS

2010 ◽  
Vol 19 (05n06) ◽  
pp. 997-1008 ◽  
Author(s):  
AVAZBEK NASIROV ◽  
GIORGIO GIARDINA ◽  
GIUSEPPE MANDAGLIO ◽  
MARINA MANGANARO ◽  
AKHTAM MUMINOV
Keyword(s):  
Angular Momentum ◽  
Cross Section ◽  
Compound Nucleus ◽  
Quantitative Estimation ◽  
Fusion Cross Section ◽  
Heavy Ion ◽  
Partial Cross Section ◽  
Complete Fusion ◽  
Dinuclear System ◽  
Mass Distributions

The mixing of the quasifission component to the fissionlike cross section causes ambiguity in the quantitative estimation of the complete fusion cross section from the observed angular and mass distributions of the binary products. We show that the partial cross section of quasifission component of binary fragments covers the whole range of the angular momentum values leading to capture. The calculated angular momentum distributions for the compound nucleus and dinuclear system going to quasifission may overlap: competition between complete fusion and quasifission takes place at all values of initial orbital angular momentum. Quasifission components formed at large angular momentum of the dinuclear system can show isotropic angular distribution and their mass distribution can be in mass symmetric region similar to the characteristics of fusion-fission components. As result the unintentional inclusion of the quasifission contribution into the fusion-fission fragment yields can lead to overestimation of the probability of the compound nucleus formation.

scholarly journals Lowered fusion cross section in the quadruply magic heavy-ion system 48 Ca + 208 Pb

1978 ◽  
Vol 74 (1-2) ◽  
pp. 35-38 ◽  
Author(s):  
D.J. Morrissey ◽  
W. Loveland ◽  
R.J. Otto ◽  
G.T. Seaborg
Keyword(s):  
Cross Section ◽  
Fusion Cross Section ◽  
Heavy Ion
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