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| تعداد نشریات | 162 |
| تعداد شماره‌ها | 6,691 |
| تعداد مقالات | 72,219 |
| تعداد مشاهده مقاله | 129,108,109 |
| تعداد دریافت فایل اصل مقاله | 101,911,354 |
Nuclear-Charge Screening in Positronium Formation from Helium Atoms | ||
| Journal of Sciences, Islamic Republic of Iran | ||
| مقاله 6، دوره 23، شماره 4، اسفند 2012، صفحه 357-365 اصل مقاله (362.66 K) | ||
| نویسنده | ||
| E. Ghanbari-Adivi | ||
| Department of Physics and Isfahan Quantum Optics Group (IQOG), Faculty of Science, University of Isfahan, | ||
| چکیده | ||
| An analytical treatment of the electron screening effect within an active-electron model is given for positronium formation from helium atoms. A first-order distorted wave approximation with correct boundary conditions is applied to evaluate the transition amplitude. In the range of impact energy for which the introduced perturbative approach is valid, both the total and differential cross sections are calculated and the results for total cross sections are compared with the other calculations and with the available experimental data. | ||
| عنوان مقاله [English] | ||
| Nuclear-Charge Screening in Positronium Formation from Helium Atoms | ||
| نویسندگان [English] | ||
| E. Ghanbari-Adivi | ||
| چکیده [English] | ||
| An analytical treatment of the electron screening effect within an active-electron model is given for positronium formation from helium atoms. A first-order distorted wave approximation with correct boundary conditions is applied to evaluate the transition amplitude. In the range of impact energy for which the introduced perturbative approach is valid, both the total and differential cross sections are calculated and the results for total cross sections are compared with the other calculations and with the available experimental data. | ||
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آمار تعداد مشاهده مقاله: 1,742 تعداد دریافت فایل اصل مقاله: 1,640 |
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