摘要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.
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.
(General theories and models of atomic and molecular collisions and interactions (including statistical theories, transition state, stochastic and trajectory models, etc.))
(Electronic excitation and ionization of atoms (including beam-foil excitation and ionization))
引用本文:
Reda S. Tantawi;Samia M. Said. Application of the Second Born Approximation to Excitation of Hydrogen Atoms by Protons and Antiprotons Impact[J]. 中国物理快报, 2008, 25(10): 3635-3638.
Reda S. Tantawi, Samia M. Said. Application of the Second Born Approximation to Excitation of Hydrogen Atoms by Protons and Antiprotons Impact. Chin. Phys. Lett., 2008, 25(10): 3635-3638.
[1] Fritsch W and Lin C D 1991 Phys. Rep. 202 1 [2] Lin C D 1993 Review of Fundamental Processes andApplication of Atoms and Ions (Singapore: World Scientific) [3] FLAIR-Facility for Low-energy Antiproton and Ion Research2007 http://www.oeaw.ac.at/smi/flair/ [4] Reinhold C O et al 1990 Phys. Rev. A 414837 [5] Janev R K and Krstic P S 1992 Phys. Rev. A 46 5554 [6] Ford A L et al J. Phys. B: At. Mol. Opt. Phys. 26 4553 [7] Tantawi R S et al 2000 Phys. Rev. A 62 42710 [8] Tantawi R S 2004 Indian J. Pure Appl. Phys. 42 506 [9] Tantawi R S 2003 Chin. Phys. Lett. 20 366 [10] Tantawi R S 2002 Chin. Phys. Lett. 19 1443 [11] Pindzola M S et al 2005 Phys Rev. A 7062703 [12] Bates D R et al 1953 Proc. Phys. Soc. A 66961 [13] Dewangan D R 1998 J. Phys. B: At. Mol. Opt.Phys. 31 L379 [14] Kingston A E et al 1960 Proc. Roy. Soc. A 258 237 [15] Moisciwitsch B L et al 1965 Proc. Phys. Soc. 85 51 [16] Holt A R et al 1968 J. Phys. B: At. Mol.Opt. Phys. 1 36 [17] Makhoute A et al 2002 J. Phys. B: At. Mol.Opt. Phys. 35 957 Makhoute A et al 2006 Eur. Phys. J. D 37 75 [18] Vinitsky P S et al 2005 Phys Rev A 71012706 [19] Schwinger J 1964 J. Math. Phys. 5 1606 [20] Schultz D R 1989 Phys Rev A 40 2330 [21] Rodriguez V D et al 1992 J. Phys. B: At. Mol.Opt. Phys. 25 2037 [22] Brigs J S et al 1991 Adv. At. Mol. and Opt.Phys. 28 1 [23] Dalitz R H 1951 Proc. Roy. Soc. A 206 509 [24] Olson R E 1980 J. Phys. B: At. Mol. Opt.Phys. 13 483
2008, Vol. 25 
