کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5395847 1505734 2014 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Modeling saturable absorption for ultra short X-ray pulses
ترجمه فارسی عنوان
مدل سازی جذب اشباع برای پالس های فوق اشعه ایکس
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
چکیده انگلیسی
Saturable absorption was recently observed in transmission measurements above the LII,III edge of pure Al thin films using ultra short X-ray pulses at a free-electron-laser (FEL) facility. The high fluence reachable by FEL pulses, the shortness of the pulse duration, and the typical lifetime of the excited state are all important factors enabling observation of the phenomenon. We devised a simplified theoretical approach describing the saturation phenomenon using a three-channel model containing ground, excited and relaxed states. This phenomenological model explicitly includes the interaction between the solid and photon field in a semi-classical way, and the resulting non-linear coupled equation is solved numerically. We successfully applied this model to recent experimental results obtained using FEL radiation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electron Spectroscopy and Related Phenomena - Volume 196, October 2014, Pages 177-180
نویسندگان
, ,