scholarly journals Quantum Mechanical Calculations of a Fusion Reaction for Some Selected Halo Systems

2019 ◽  
Vol 64 (1) ◽  
pp. 11 ◽  
Author(s):  
F. A. Majeed ◽  
F. A. Mahdi
Keyword(s):  
Fusion Reaction ◽  
Reaction Cross ◽  
Quantum Mechanical ◽  
Weakly Bound ◽  
Breakup Channel ◽  
Barrier Distribution ◽  
Mechanical Approach ◽  
Fusion Barrier Distribution ◽  
Quantum Mechanical Approach ◽  
Total Fusion

The effect of the breakup channel on the fusion reaction of weakly bound systems by means of a quantum mechanical approach has been discussed. The total fusion reaction cross-section Ofus, the fusion barrier distribution Dfus and the mean angular momentum ⟨L⟩ for the systems 6He+64Zn, 6He+209Bi, 8B+58Ni and 11Be+238U have been calculated. The inclusion of the breakup channel is found to be very essential in the calculations of the fusion reaction for systems involving light halo nuclei especially below the Coulomb barrier Vb. The results of the calculations of Ofus, Dfus and ⟨L⟩ agrees quite well with the corresponding 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. 

scholarly journals Investigation of the Calculation of Coupled Channels for Some Halo Systems

2020 ◽  
Vol 65 (11) ◽  
pp. 951
Author(s):  
F.M. Hussain ◽  
F.A. Majeed ◽  
M.H. Meteab
Keyword(s):  
Coulomb Barrier ◽  
Fusion Reaction ◽  
Fusion Cross Section ◽  
Measured Data ◽  
Elastic Channel ◽  
Coupled Channels ◽  
Breakup Channel ◽  
Fusion Probability ◽  
Barrier Distribution ◽  
Fusion Barrier Distribution

The fusion reaction for systems involving halo nuclei are investigated by two- and multicoupled channel calculations for the systems 8B+58Ni, 11Be+209Bi, and 15C+232Th. The effect of coupling between the breakup channel and the elastic channel have been considered using the Continuum Discretized Coupled Channels (CDCC) method in full quantum and semiclassical approaches. The calculation of the fusion cross-section qfus (mb), fusion barrier distribution Dfus (mb/MeV) and fusion probability Pfus reproduces the measured data for the systems under study quite well above and below the Coulomb barrier VB. In the case of two-channel coupling both in semiclassical and quantum mechanical approaches, the measured data above the Coulomb barrier VB are overestimated.

scholarly journals Coupled channels calculations of fusion reactions for 46Ti+64Ni, 40Ca+194Pt and 40Ar+148Sm systems

2020 ◽  
Vol 18 (47) ◽  
pp. 84-90
Author(s):  
Hayder Jasim Musa ◽  
Fouad A. Majeed ◽  
Ali T. Mohi
Keyword(s):  
Experimental Data ◽  
Fusion Cross Section ◽  
Quantum Calculations ◽  
Fusion Reactions ◽  
Coupled Channels ◽  
Barrier Distribution ◽  
Mechanical Approach ◽  
Fusion Barrier Distribution ◽  
Quantum Mechanical Approach ◽  
Coupled Channel

In this work, the fusion cross section ,  fusion barrier distribution  and the probability of fusion  have been investigated by coupled channel method  for the systems 46Ti+64Ni, 40Ca+194Pt and 40Ar+148Sm with semi-classical and quantum mechanical approach using SCF and CCFULL Fortran codes respectively. The results for these calculations are compared with available experimental data. The results show that the quantum calculations agree better with experimental data, especially bellow the Coulomb barrier, for the studied systems while above this barrier, the two codes reproduce the data.

Quantitative Prediction of Aggregation‐Induced Emission: A Full Quantum Mechanical Approach to the Optical Spectra

2020 ◽  
Vol 132 (28) ◽  
pp. 11647-11652
Author(s):  
Wei Zhang ◽  
Jinfeng Liu ◽  
Xinsheng Jin ◽  
Xinggui Gu ◽  
Xiao Cheng Zeng ◽  
...  
Keyword(s):  
Optical Spectra ◽  
Quantitative Prediction ◽  
Quantum Mechanical ◽  
Aggregation Induced Emission ◽  
Mechanical Approach ◽  
Quantum Mechanical Approach ◽  
Full Quantum

Comment on: “On the standard quantum-mechanical approach to times of arrival”

2003 ◽  
Vol 313 (5-6) ◽  
pp. 498-501 ◽  
Author(s):  
I.L. Egusquiza ◽  
J.G. Muga ◽  
B. Navarro ◽  
A. Ruschhaupt
Keyword(s):  
Quantum Mechanical ◽  
Standard Quantum ◽  
Mechanical Approach ◽  
Quantum Mechanical Approach
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