Exciton Model Calculations up to 200 MeV: The Optical Model Points the Way

2005 ◽  
Author(s):  
M. C. Duijvestijn
Keyword(s):  
Optical Model ◽  
Exciton Model ◽  
Model Calculations ◽  
The Way

Systematic nonlocal optical model potential for nucleons

2015 ◽  
Vol 24 (01) ◽  
pp. 1550006 ◽  
Author(s):  
Yuan Tian ◽  
Dan-Yang Pang ◽  
Zhong-Yu Ma
Keyword(s):  
Cross Sections ◽  
Optical Model ◽  
Model Potential ◽  
Nucl Phys ◽  
Angular Distributions ◽  
Model Calculations ◽  
Analyzing Powers ◽  
Optical Model Potential ◽  
Fitting Procedures ◽  
Scattering Cross Sections

Based on the Perey–Buck nonlocal optical model potential, F. Perey and B. Buck, Nucl. Phys. 32 (1962) 353, we obtain a new set of nonlocal optical model potential (NLOMP) parameters for proton and neutron scattering off nuclei. The experimental angular distributions of nucleon scattering off nuclei ranging from 27 Al to 208 Pb with incident energies around 10 MeV to 30 MeV are adopted in the fitting procedures. This NLOMP is energy independent. The chi-squares χ2 obtained in the fittings are comparable to those from the KD03 phenomenological local optical model potentials (OMP) A. Koning and J. Delaroche, Nucl. Phys. A 713 (2003) 231. Good agreement is found in comparisons between optical model calculations using this NLOMP and KD03 in their reproduction to the experimental angular distributions of elastic scattering cross-sections and analyzing powers.

Microscopic optical model calculations of - nucleus absorption cross sections

1996 ◽  
Vol 22 (3) ◽  
pp. 387-396 ◽  
Author(s):  
R R Dubey ◽  
G S Khandelwal ◽  
F A Cucinotta ◽  
J W Wilson
Keyword(s):  
Cross Sections ◽  
Optical Model ◽  
Absorption Cross ◽  
Model Calculations

MEASUREMENT AND ANALYSIS OF EXCITATION FUNCTIONS FOR ALPHA-INDUCED REACTIONS IN BISMUTH

1992 ◽  
Vol 01 (04) ◽  
pp. 823-831 ◽  
Author(s):  
B. P. SINGH ◽  
M. G. V. SANKARACHARYULU ◽  
M. A. ANSARI ◽  
R. PRASAD ◽  
H. D. BHARDWAJ
Keyword(s):  
Energy Range ◽  
Compound Nucleus ◽  
Projectile Energy ◽  
Exciton Model ◽  
Excitation Functions ◽  
Model Calculations ◽  
Stacked Foil Technique ◽  
Measurement And Analysis ◽  
Foil Technique

Excitation functions for 209 Bi (α, 3n), 209 Bi (α, 4n) and 209 Bi (α, 5n) reactions have been measured in the energy range threshold to ≈50 MeV using stacked foil technique. Excitation functions have also been theoretically calculated and as expected, inclusion of pre-equilibrium contribution based on exciton model calculations along with compound nucleus calculations using Hauser–Feshbach formalism reproduces well the measured excitation functions. Interesting trend in the ratio of pre-equilibrium to equilibrium component with projectile energy has been observed.

scholarly journals Thermonuclear Reaction Rates for Reactions Leading to N = 28 Nuclei

1995 ◽  
Vol 48 (1) ◽  
pp. 125
Author(s):  
A.J Morton ◽  
DG Sargood
Keyword(s):  
Statistical Model ◽  
Nuclear Reaction ◽  
Cross Sections ◽  
Optical Model ◽  
Reaction Rates ◽  
Reaction Cross ◽  
Model Parameters ◽  
Thermonuclear Reaction ◽  
Model Calculations ◽  
Reaction Cross Sections

Nuclear reaction cross sections derived from statistical-model calculations have been used in the calculation of thermonuclear reaction rates for 36 nuclei at temperatures that are representative of the interiors of evolving stars and supernovae as nucleosynthesis approaches the production of nuclei with N = 28. The statistical-model calculations used optical-model parameters in the particle channels which had been selected to give the best overall agreement between theoretical and experimental cross sections for reactions on stable target nuclei in the mass and energy ranges of importance for the stellar conditions of interest. The optical-model parameters used, and the stellar reaction rates obtained, are tabulated. Comparisons are made between these stellar rates and those from other statistical-model calculations in the literature.

Optical model calculations for the elastic scattering of intermediate energy alpha particles

1994 ◽  
Vol 49 (3) ◽  
pp. 1609-1620 ◽  
Author(s):  
Anders Ingemarsson ◽  
Agris Auce ◽  
Roger Johansson
Keyword(s):  
Elastic Scattering ◽  
Optical Model ◽  
Intermediate Energy ◽  
Alpha Particles ◽  
Model Calculations

scholarly journals Saturation of coupling of collective levels in optical model calculations of even-even actinides

2017 ◽  
Vol 146 ◽  
pp. 12013 ◽  
Author(s):  
José Manuel Quesada ◽  
Dmitry Martyanov ◽  
Efrem Soukhovitskiĩ ◽  
Roberto Capote ◽  
Satoshi Chiba
Keyword(s):  
Optical Model ◽  
Model Calculations ◽  
Collective Levels
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