Strong absorption formalism applied to the direct transfer reaction leading to continuum states

Badran, R. I.; Naqib, I.M.; Parker, D.J.; Asher, J.

doi:10.1088/0954-3899/22/10/008

Cited by 16 publications

(24 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Using reasonable value of r α =1.45 fm [23][24] and the strong absorption radius for α + 58 Ni obtained from the present analysis (6.44 fm), yield a value of r 0 =1.29 fm. From a similar analysis of this scattering process but at 43MeV laboratory energy, a value of 1.36 fm is rather obtained from the fitting which becomes 1.5fm when the above value of r α is used instead [11]. Table 1.…”

Section: Elastic Scattering Of α + 58 Nimentioning

confidence: 99%

“…Such effects may be described by a function defined by the Fourier transform of an absorptive shape function. In the presence of strong absorption, several theoretical investigations were based on numerical and analytical treatments of the partial wave expansion model for elastic scattering [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. Most of these investigations showed clearly how sensitive the scattering data for strongly absorbed particles are to the detailed form of the scattering matrix around the grazing angular momentum.…”

Section: Introductionmentioning

confidence: 99%

“…Most of these investigations showed clearly how sensitive the scattering data for strongly absorbed particles are to the detailed form of the scattering matrix around the grazing angular momentum. Some of these investigations used the extracted McIntyre parameters of the elastic scatterings for the entrance and exit channels of transfer reactions [10][11][12]. Other investigations demonstrated a wide scope of the use of the strong absorption model in explaining the elas-tic scattering of heavy ions [15].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Phenomenological analysis of elastic scattering reactions using different models

Badran¹,

Badahdah²

2009

Braz. J. Phys.

View full text Add to dashboard Cite

McIntyre and Frahn-Venter three-parameter models are used to analyze the experimental data of three elastic scattering reactions α + 58 Ni, α + 116 Sn and α + 197 Au at the same incident energy of 240MeV. The different α-scattering cases have the same number of minima and maxima in their oscillatory structures of angular distribution. The increase in the mass of target nucleus leads to a smaller nuclear deflection minimum and causes the corresponding angular distribution to become smoother and with steeper slope. The Coulomb damping of Fraunhofer oscillations has an effect accompanied with the increase of mass of target nucleus. The presence of semi-classical phenomena such as Fresnel and Fraunhofer diffraction patterns etc., has been found by analyzing the experimental data of elastic scattering reactions, 16 O + 64 Zn, 32 S + 64 Ni, and 58 Ni + 27 Al at several laboratory energies. The generalised Fresnel model can fairly reproduce the angular distribution of these reactions. Excellent fitting can be obtained using Regge pole model, especially at backward angles where the data can not be recovered by the other three models. The adopted theoretical models can reasonably account for the general pattern of the data, thus allowing us to extract important parameters from elastic scattering processes. The analysis also shows that the total reaction cross section has an energy-dependent trend similar to that found by other models.

show abstract

Section: Elastic Scattering Of α + 58 Nimentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phenomenological analysis of elastic scattering reactions using different models

Badran¹,

Badahdah²

2009

Braz. J. Phys.

View full text Add to dashboard Cite

show abstract

“…The S-matrix, which represents the effect of the scattering potential on the incident wave, may be determined fitting its angular momentum components to the measured elastic angular distribution. It has been found that the parameterised S-matrix is a source of important information which is needed in calculations of transfer reactions based on the strong absorption model [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

An Analysis of Heavy-Ion Elastic Scattering Processes Using Numerical Model Based on the Partial Wave Parameterised S-Matrix with Regge Pole Factor

Badran

Al-Lehyani

2016

Braz J Phys

View full text Add to dashboard Cite

Analyses of the angular distributions in the elastic scattering processes of 9, 10, 11 Be by the target nucleus 64 Zn at the laboratory energies of 27. 95 MeV,and 4,6,8 He by the target nucleus 208 Pb at the laboratory energy of 22 MeV are performed. These analyses rely on a numerical model based on a parameterised scattering matrix (S-matrix) derived from Frahn and Venter. They confirm the absence of the Coulomb rainbow peak in angular distributions of elastic scattering in collisions of halo nuclei at energies around the Coulomb barrier. The correlation between the total reaction cross section and the halo structure for each scattering that involves a halo nucleus is discussed, and values of the total reaction cross section are found comparable with those of others. The diffractive features of the systems 16, 18 O + 19 F at specific laboratory energies are examined, and the effect of exchanging the projectile and target nuclei at such energies on these features are inspected. The incorporation of the Regge pole factor into the parameterised S-matrix calculations, which is found important in some cases, is employed in order to account for the oscillatory structure (if available) at backward angles. The theoretical results are found reasonable, reproducing the general pattern of the data. The trend of the extracted parameters meets the requirements proposed by the adopted models.

show abstract

“…Attempts to study the reactions of 7 Li on 56 Fe have been made [1,2]. Excitation functions and differential recoil range distributions for different radioactive products of the 7 Li on 56 Fe reaction together with inclusive proton, deuteron, triton and alpha spectra, have been measured up to E( 7 Li) = 89 MeV [1].…”

Section: Introductionmentioning

confidence: 99%

Further Study and Analysis of the 7 Li on 56 Fe Reaction at 50 MeV Incident Energy

Badran

2004

Acta Physica Hungarica A) Heavy Ion Physics

View full text Add to dashboard Cite

We present deuteron and triton spectra measured at 12 laboratory angles from the reaction of 50 MeV 7 Li on 56 Fe together with evaporative components as modeled by CASCADE and fitted to the backward angle data. The deuteron and triton "break-up" spectra obtained by subtracting the evaporative components from the measured spectra are also presented. The break-up of the 7 Li projectile near the surface occurs with high probability and the major fraction of the break-up cross-section is taken by (7 Li,α) transfer process. A crude estimate of the fraction of the total cross-section is found to be of the same order of magnitude as the overall spectroscopic factor determined by the diffraction model. The value of the estimated fraction of total cross section at 50 MeV incident energy is compared to that at 68 MeV incident energy for the same reaction. However, these values of estimated fraction of total cross section are found very much consistent with the measured yields at both incident energies. The importance of the level density parameter in locating the maximum of excitation energy is indicated in the diffraction model.

show abstract

Strong absorption formalism applied to the direct transfer reaction leading to continuum states

Cited by 16 publications

References 26 publications

Phenomenological analysis of elastic scattering reactions using different models

Phenomenological analysis of elastic scattering reactions using different models

An Analysis of Heavy-Ion Elastic Scattering Processes Using Numerical Model Based on the Partial Wave Parameterised S-Matrix with Regge Pole Factor

Further Study and Analysis of the 7 Li on 56 Fe Reaction at 50 MeV Incident Energy

Contact Info

Product

Resources

About