کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9817966 | 1518773 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ionization of light atoms by ultra-fast ions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
سطوح، پوششها و فیلمها
پیش نمایش صفحه اول مقاله

چکیده انگلیسی
We propose a semi-relativistic symmetric eikonal distorted wave method (SRSE) for treating collisions of fast and ultra-fast projectiles with light and medium-heavy atomic targets. The projectile interaction with target electrons is described by the Liénard-Wiechert (LW) potential, within the impact parameter approach. Our model allows to estimate two-centre effects in fast heavy-particle collisions and analyse the limit of the ultra-relativistic collisions. We show that the improvement upon the first Born approximation (FBA) by taking into account the exact boundary conditions in the entrance and exit channels eliminates the well-known anomaly of the FBA ionization cross section at ultra-relativistic impact velocities.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 235, Issues 1â4, July 2005, Pages 321-325
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 235, Issues 1â4, July 2005, Pages 321-325
نویسندگان
A.V. Selin, A.M. Ermolaev,