PHASE-SHIFT ANALYSIS AND FIRST-ORDER EIKONAL CORRECTION TO OPTICAL POTENTIAL BY INVERSION FOR 16O+28SI ELASTIC SCATTERING AT Elab=1503 MEV

We analyze 16 O +28 Si elastic scattering at E lab =1503 MeV using a phase shift analysis based on McIntyre parametrization of S-matrix. The near- and far-side decompositions of elastic cross section have been also performed by following Fuller's formalism. By using the inversion procedure of McIntyre S-matrix, the optical potential is obtained and its result was compared with one of the optical model analysis. The first-order eikonal correction effect on the optical potential by inversion is discussed.

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NON-EIKONAL PHASE SHIFT ANALYSIS FOR 12C + 12C ELASTIC SCATTERING

International Journal of Modern Physics E ◽

10.1142/s0218301300000052 ◽

2000 ◽

Vol 09 (01) ◽

pp. 67-76 ◽

Cited By ~ 3

Author(s):

YONG JOO KIM ◽

MOON HOE CHA

Keyword(s):

Elastic Scattering ◽

Phase Shift ◽

Heavy Ion ◽

Phase Shift Analysis ◽

Angular Distributions ◽

Real Potential ◽

Imaginary Potential ◽

First Order ◽

Shift Analysis ◽

Nuclear Rainbow

We present first-order non-eikonal correction to the eikonal phase shifts for heavy ion elastic scattering based on Coulomb trajectories of colliding nuclei. It has been applied satisfactorily to elastic angular distributions of the 12 C + 12 C system at E lab = 240, 360 and 1016 MeV. The refractive oscillations observed in the elastic scattering angular distributions could be explained due to interference between the near- and far-side amplitudes. The presence of a nuclear rainbow is evidenced through classical deflection function. We have found that the first-order non-eikonal effect on the imaginary potential is important when the absorptive potential is weak and the real potential is strong.

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Phase shift analysis of the 6He+208Pb and the 6He+197Au systems

Open Physics ◽

10.2478/s11534-011-0082-8 ◽

2012 ◽

Vol 10 (1) ◽

Cited By ~ 1

Author(s):

Orhan Bayrak ◽

Ismail Boztosun

Keyword(s):

Experimental Data ◽

Elastic Scattering ◽

Phase Shift ◽

Long Range ◽

Excellent Agreement ◽

Phase Shift Analysis ◽

Shift Analysis ◽

S Matrix ◽

Theoretical Results ◽

Rainbow Scattering

AbstractWe present the elastic scattering of the 6He+208Pb and the 6He+197Au systems at the laboratory energy of E lab=27 MeV within the framework of the McIntyre parametrization, and systematically investigate χ 2/N analysis of both systems to obtain an excellent agreement between the theoretical results and the experimental data. We find large diffusivity parameters indicating long range absorption mechanisms. We also show that both systems lack both the nuclear and the Coulomb rainbow scattering for obtained S-matrix parameters.

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