| Scattering of protons and antiprotons by hydrogen atoms |
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| 引用本文： | Reda S. Tantawi,A.S.Sabbah. Scattering of protons and antiprotons by hydrogen atoms[J]. 中国物理, 2002, 11(12): 1259-1266 |
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| 作者姓名： | Reda S. Tantawi A.S.Sabbah |
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| 作者单位： | Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt;Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt |
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| 摘 要： | The two-,four-,five-and fourteen-state approximations of the inpact parameter method have been applied to the excitation of hydrogen atoms by proton(p)and antiproton(p) impact.The effect of both channel and back couplings on the 2s and 2p excitations are investigated.The total cross sections are calculated for incident energies ranging from 1 to 2500keV.it is found that the effect of both channel and back couplings on the antiproton-induced reactions is greater than on that induced by protons.We compare the results with those of other theoretical and experimental works.
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| 关 键 词： | 质子氢原子碰撞 碰撞参数 激发截面 |
| 收稿时间： | 2002-05-20 |
| 修稿时间： | 2002-07-08 |
Scattering of protons and antiprotons by hydrogen atoms |
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| Reda S. Tantawi and A.S.Sabbah. Scattering of protons and antiprotons by hydrogen atoms[J]. Chinese Physics, 2002, 11(12): 1259-1266 |
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| Authors: | Reda S. Tantawi and A.S.Sabbah |
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| Affiliation: | Department of Mathematics, Faculty of Science, Zagazig University, Zagazig, Egypt |
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| Abstract: | The two-, four-, five- and fourteen-state approximations of the impact parameter method have been applied to the excitation of hydrogen atoms by proton (p) and antiproton (overline p) impact. The effect of both channel and back couplings on the 2s and 2p excitations are investigated. The total cross sections are calculated for incident energies ranging from 1 to 2500 keV. It is found that the effect of both channel and back couplings on the antiproton-induced reactions is greater than on that induced by protons. We compare the results with those of other theoretical and experimental works. |
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| Keywords: | impact parameter method excitation cross sections back coupling sign of the projectile charge |
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