APMN – A Program for Automatically Searching Optimal Optical Potential Parameters

A general overview is presented of an effective model for the inclusion of (d,p) and (d,n) nucleon transfer direct reactions to bound states of the residual nucleus in the general-purpose radiation-transport code FLUKA. The model relies on the distorted-wave Born approximation, employing state-of-the-art subroutines for the numerical solution of the radial Schrödinger equation for the deuteron- and nucleon-nucleus wave-functions, as well as contemporary optical potential models for the latter two. A final variation of a handful of deuteron optical potential parameters provides the model with additional flexibility and enhances the agreement with experimental nucleon angular distributions in a considerable range of target nuclei and deuteron energies.

Download Full-text

Elastic Scattering of 100 MeV Protons by 14N

Canadian Journal of Physics ◽

10.1139/p73-076 ◽

1973 ◽

Vol 51 (5) ◽

pp. 592-594

Author(s):

C. C. Chao ◽

J. K. P. Lee

Keyword(s):

Elastic Scattering ◽

Optical Potential ◽

Optical Model ◽

Scattering Data ◽

Potential Parameters ◽

Mev Protons

The elastic scattering of 100 MeV protons from 14N has been studied and results were analyzed by the optical model. The optical potential parameters obtained were compared to those from the same reaction at different bombarding energies and also to those obtained from elastic scattering data of 100 MeV protons from other 1p shell nuclei.

Download Full-text

Spectroscopic information of 6Li from elastic scattering of deuterons, 3He and 4He by 6Li

International Journal of Modern Physics E ◽

10.1142/s0218301314500414 ◽

2014 ◽

Vol 23 (08) ◽

pp. 1450041

Author(s):

A. Amar

Keyword(s):

Elastic Scattering ◽

Cross Sections ◽

Optical Potential ◽

Wide Energy Range ◽

Spectroscopic Information ◽

Wide Energy ◽

Double Folding ◽

Potential Parameters ◽

Coupled Reaction ◽

Good Agreement

The elastic scattering of deuterons, 3 He and 4 He on 6 Li at different incident energies have been analyzed in the framework of the optical model (OM) using ECIS88 as well as SPI GENOA codes. The optical potential parameters were extracted in the phenomenological treatment. A good agreement between theoretical and experimental differential cross-sections was obtained in whole angular range. Parameters for real part of potential have been also calculated microscopically with double-folding model for the d, 3 He and 4 He scattering, respectively, using DFPOT code. The elastic transfer mechanism has been studied by coupled reaction channel (CRC) method using FRESCO code. Spectroscopic amplitudes of 6 Li ≡ t + 3 He and 6 Li ≡ α + d configurations have been extracted from d, 3 He and 4 He scattering on 6 Li at wide energy range. A comparison between spectroscopic amplitudes obtained from deuteron and α elastically scattering from 6 Li has been made. The extracted spectroscopic amplitudes of 6 Li ≡ 4 He + d( SF = SA 2) from 6 Li (d, 6 Li )d and 6 Li (α, 6 Li )α are not the same as expected theoretically.

Download Full-text

Elastic scattering of 119 MeV 3He particles and energy and mass-number dependence of optical potential parameters

Nuclear Physics A ◽

10.1016/0375-9474(80)90013-5 ◽

1980 ◽

Vol 333 (1) ◽

pp. 1-12 ◽

Cited By ~ 43

Author(s):

M. Hyakutake ◽

I. Kumabe ◽

M. Fukada ◽

T. Komatuzaki ◽

T. Yamagata ◽

...

Keyword(s):

Elastic Scattering ◽

Optical Potential ◽

Mass Number ◽

Potential Parameters

Download Full-text

Scattering of 100-MeV protons by 11B and 16O

Canadian Journal of Physics ◽

10.1139/p70-097 ◽

1970 ◽

Vol 48 (6) ◽

pp. 765-774 ◽

Cited By ~ 8

Author(s):

A. J. Houdayer ◽

T. Y. Li ◽

S. K. Mark

Keyword(s):

Excited State ◽

Elastic Scattering ◽

Inelastic Scattering ◽

Excited States ◽

Optical Potential ◽

Optical Model ◽

Experimental Results ◽

Optical Model Analysis ◽

Potential Parameters ◽

Mev Protons

The scattering of 100-MeV protons from 11B and 16O has been studied. An optical-model analysis of the elastic scattering on these nuclei has been performed and a consistent set of optical potential parameters which gave a good fit to the experimental results was obtained. In the inelastic scattering on 11B, it has been found that the first and third excited states were weakly excited whereas the second excited state was fairly strongly excited. The results were explained in terms of the unified model.

Download Full-text

Distorted-wave Born approximation analysis for the reaction 12C(p,d)11C at 100 MeV

Canadian Journal of Physics ◽

10.1139/p69-034 ◽

1969 ◽

Vol 47 (3) ◽

pp. 257-265 ◽

Cited By ~ 3

Author(s):

T. Y. Li ◽

S. K. Mark

Keyword(s):

Excited State ◽

Ground State ◽

Born Approximation ◽

Optical Potential ◽

State Transitions ◽

Distorted Wave ◽

Distorted Wave Born Approximation ◽

Transition Analysis ◽

Approximation Analysis ◽

Potential Parameters

A distorted-wave Born approximation analysis of the 12C(p,d)11C reaction at 100 MeV has been performed by using the local-energy approximation for the finite-range correction. The neutron was assumed to be picked up from a bound state in a real Saxon–Woods well. The proton potential was fixed and a search was made to extract the deuteron optical potential parameters by fitting the angular distribution of the ground-state transition. Analysis of the excited states was carried out with all potential parameters fixed. Fairly good agreement with experiment has been obtained for the ground state, the 2.0-MeV excited state, and the 4.80-MeV excited state. Transitions to the 4.31-MeV state and states in the 6.9-MeV region were discussed. The spectroscopic factors extracted from experiment were generally smaller than those predicted by Cohen and Kurath, based on the intermediate-coupling shell model. The deuteron optical potential obtained is fairly reasonable with a real well depth slightly deeper than the expected value deduced from the elastic scattering of nucleons.

Download Full-text