Chin. Phys. Lett.  2008, Vol. 25 Issue (10): 3635-3638    DOI:
Original Articles |
Application of the Second Born Approximation to Excitation of Hydrogen Atoms by Protons and Antiprotons Impact
Reda S. Tantawi2, Samia M. Said1
1Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt2Department of Basic Engineering Sciences, Faculty of Engineering, Sana'a University, Sana'a, Yemen
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Reda S. Tantawi, Samia M. Said 2008 Chin. Phys. Lett. 25 3635-3638
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Abstract We present and compare total cross sections for excitation in collisions of protons and antiprotons with hydrogen atoms in the 2s state. Calculations are performed in the framework of the second Born approximation, in the energy range of 5--1000keV. We apply the usual approach of the second Born approximation, which approximates the summation raised by retaining few terms, as well as another approach approximates all energies corresponding to the intermediate states to that corresponding to the initial state. The annihilation effect in the case of the antiproton collision is investigated. We compare the results with the previous theoretical calculations.
Keywords: 34.10.+x      34.50.Fa     
Received: 10 February 2008      Published: 26 September 2008
PACS:  34.10.+x (General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))  
  34.50.Fa (Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))  
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Reda S. Tantawi
Samia M. Said
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