تقرير
Significance of high charge state of projectile ions inside the target and its role on electron capture leading to target ionization phenomenon
| العنوان: | Significance of high charge state of projectile ions inside the target and its role on electron capture leading to target ionization phenomenon |
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| المؤلفون: | Chatterjee, Soumya, Sharma, Prashant, Claudia, Montanary, Mitra, D., Nandi, T. |
| المصدر: | Phys. Rev. A 104, 022810 (2021) |
| سنة النشر: | 2021 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Atomic Physics |
| الوصف: | The K x-ray spectra of different targets (Cu, Zn, and Ge) induced by 3 to 5 MeV/u Si projectile ions have been measured to determine the K-shell ionization cross-section. A significant difference is observed between the measurements and theoretical estimates, with the latter being about 50% below the experimental results. This underestimation} is attributed to the charge-exchange from target K-shell to projectile K- and L-shells. Such observation can only be possible if the projectile ions attain up to H- and He-like charge states. Corresponding projectile charge state fractions have been evaluated from the Lorentzian charge state distribution, where mean charge state is taken from the Fermi gas model [Phys. Rev. Lett. 30, 358 (1973)] and width from the Novikov and Teplova approach [Phys. Lett. A378, 1286-1289 (2014)]. The sum of the direct ionization cross-section and K-K + K-L capture cross-sections gives a good agreement with the measured cross-sections. Furthermore, we have validated this methodology with available data for Si-ion on Ti target. Such results may be useful in many solid target based applications. Comment: 13 pages, 12 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevA.104.022810 |
| URL الوصول: | http://arxiv.org/abs/2103.08299 |
| رقم الأكسشن: | edsarx.2103.08299 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevA.104.022810 |
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