Elastic scattering and rotational excitation of Li2 by positron impact

2018 ◽  
Vol 227 ◽  
pp. 9-14 ◽  
Author(s):  
Eliton P. Seidel ◽  
Marcos V. Barp ◽  
Wagner Tenfen ◽  
Felipe Arretche
Keyword(s):  
Elastic Scattering ◽  
Rotational Excitation ◽  
Positron Impact

scholarly journals Elastic scattering and rotational excitation of nitrogen molecules by sodium atoms

2011 ◽  
Vol 135 (17) ◽  
pp. 174301 ◽  
Author(s):  
Jérôme Loreau ◽  
Peng Zhang ◽  
Alexander Dalgarno
Keyword(s):  
Elastic Scattering ◽  
Rotational Excitation ◽  
Sodium Atoms

Rotational excitation of O2 by positron impact

2021 ◽  
Vol 179 ◽  
pp. 109140
Author(s):  
Marcos V. Barp ◽  
Wagner Tenfen ◽  
Felipe Arretche
Keyword(s):  
Rotational Excitation ◽  
Positron Impact

Relativistic elastic scattering of hydrogen atom by positron impact in a circularly polarized laser field

2013 ◽  
Vol 91 (9) ◽  
pp. 696-702 ◽  
Author(s):  
B. Manaut ◽  
S. Taj ◽  
M. El Idrissi
Keyword(s):  
New York ◽  
Elastic Scattering ◽  
Hydrogen Atom ◽  
Cross Sections ◽  
Differential Cross ◽  
Quantum Electrodynamics ◽  
Laser Field ◽  
Differential Cross Sections ◽  
Positron Impact ◽  
Circularly Polarized

In the framework of the first Born approximation and using the Dirac–Volkov formalism, we investigate the relativistic model describing the laser assisted elastic differential cross sections (DCSs) for positron scattering by the hydrogen atom. Both the DCSs for electron and positron are notably modified by the circularly polarized laser field, particularly in the regime of high energies and medium intensities. Comparing the two numerical DCSs, we recover the well-known result that the elastic scattering differential cross sections with and without laser field for a hydrogen atom by electron and positron impact are the same (Greiner and Reinhardt. Quantum Electrodynamics, 2nd ed., Springer Verlag, New York, Berlin, Heidelberg. 1994). The numerical results reveal that the differential cross section for positron – hydrogen atom scattering is significantly reduced with the increase of the electric field strength.

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