Elastic scattering of 17F on 208Pb and 17F breakup cross section at Coulomb barrier energies

2004 ◽  
Vol 746 ◽  
pp. 522-525 ◽  
Author(s):  
M. Romoli ◽  
M. Mazzocco ◽  
E. Vardaci ◽  
M. Di Pietro ◽  
R. Bonetti ◽  
...  
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Coulomb Barrier ◽  
Breakup Cross Section

RADIAL SENSITIVITY OF THE ELASTIC SCATTERING AROUND THE COULOMB BARRIER ENERGIES FOR WEAKLY-BOUND AND HALO NUCLEI

2012 ◽  
Vol 27 (21) ◽  
pp. 1250118
Author(s):  
Y. SERT ◽  
T. CANER ◽  
O. BAYRAK ◽  
I. BOZTOSUN
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Coulomb Barrier ◽  
Optical Potential ◽  
Theoretical Calculations ◽  
Fusion Cross Section ◽  
Halo Nuclei ◽  
Weakly Bound ◽  
Medium Mass ◽  
Good Agreement

The radial sensitivity of the elastic scattering of the weakly-bound 6 Li and halo 6 He nuclei on medium-mass 64 Zn target and heavy target 208 Pb is examined around the Coulomb barrier energies. We present that very good agreement between theoretical and experimental results have been obtained with small χ2/N values. The fusion cross-section and volume integrals of the potentials have been deduced from the theoretical calculations for all studied systems at relevant energies. We have also analyzed the elastic scattering of the 6 He +208 Pb system at E lab = 14, 16, 18, 22, 27 MeV in order to investigate whether there is a dispersion relation between the real and imaginary parts of the optical potential.

Radial sensitivity of the optical model potentials for 4He+120Sn and 6He+120Sn

2016 ◽  
Vol 25 (09) ◽  
pp. 1650071 ◽  
Author(s):  
Y. Sert ◽  
I. Boztosun
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Coulomb Barrier ◽  
Incident Energy ◽  
Optical Model ◽  
Scattering Cross Section ◽  
Model Potentials ◽  
Scattering Cross ◽  
Elastic Scattering Cross Section

In this paper, the radial sensitivity of the elastic scattering cross-section for the 4He and 6He on [Formula: see text]Sn have been examined at energies near the Coulomb barrier. We also investigate the variation of the potential radius depending on the incident energy for the [Formula: see text]Sn and [Formula: see text]Sn systems. Especially, we have taken care of to stay within one family for [Formula: see text]Sn elastic scattering, i.e., using [Formula: see text] real depth have not been changed by more than 20–30%.

EXTENDED OPTICAL MODEL ANALYSES FOR 9Be + 144Sm SYSTEM NEAR COULOMB BARRIER ENERGIES

2011 ◽  
Vol 26 (05) ◽  
pp. 325-336 ◽  
Author(s):  
W. Y. SO ◽  
K. S. KIM
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Cross Sections ◽  
Coulomb Barrier ◽  
Optical Model ◽  
Fusion Cross Section ◽  
Reaction Cross ◽  
Direct Reaction ◽  
Cross Section Data ◽  
Section Data

Within the framework of an extended optical model, we study elastic scattering and fusion cross section data for 9 Be + 144 Sm system near Coulomb barrier energies to determine the polarization potential decomposed into direct reaction and fusion parts. We show that the direct reaction and fusion potentials extracted from χ2 analyses separately satisfy the dispersion relation and that the threshold anomaly exhibits in the fusion part. The analyses using only elastic scattering and fusion data can furnish very consistent and reliable predictions of cross sections even though the direct reaction cross section data are not enough. From these analyses, we also obtain the semi-experimental α single and α–α coincidence cross sections, [Formula: see text] and [Formula: see text], for 9 Be + 144 Sm system.

Elastic Scattering in Electron Microscopy

1973 ◽  
Vol 31 ◽  
pp. 252-253
Author(s):  
J. Langmore ◽  
M. Isaacson ◽  
J. Wall ◽  
A. V. Crewe
Keyword(s):  
Electron Microscopy ◽  
Elastic Scattering ◽  
Cross Section ◽  
Quantum Noise ◽  
Dark Field ◽  
Elastic Cross Section ◽  
Biological Molecules ◽  
Dark Field Microscopy ◽  
Field Systems ◽  
Effects Of Radiation

High resolution dark field microscopy is becoming an important tool for the investigation of unstained and specifically stained biological molecules. Of primary consideration to the microscopist is the interpretation of image Intensities and the effects of radiation damage to the specimen. Ignoring inelastic scattering, the image intensity is directly related to the collected elastic scattering cross section, σɳ, which is the product of the total elastic cross section, σ and the eficiency of the microscope system at imaging these electrons, η. The number of potentially bond damaging events resulting from the beam exposure required to reduce the effect of quantum noise in the image to a given level is proportional to 1/η. We wish to compare η in three dark field systems.

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