کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5367195 1388362 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Back flux at polyatomic gas expansion for pulsed laser evaporation
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Back flux at polyatomic gas expansion for pulsed laser evaporation
چکیده انگلیسی

The back flux value at polyatomic gas expansion under pulsed laser evaporation is determined on the basis of one-dimensional direct Monte Carlo simulation. Calculations are performed for a wide range of evaporated matter amount. Taking into account rotational and vibrational degrees of freedom substantially increases the back flux. Dependence of the back recondensed fraction on the relaxation collision number is shown. The data are generally in good agreement with available analytical predictions. Importance of consideration of energy transfer from the internal degrees of freedom to the translational ones is illustrated by an example of pulsed laser evaporation of polytetrafluoroethylene (PTFE) and polymethylmethacrylate (PMMA).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 252, Issue 8, 15 February 2006, Pages 2978-2988
نویسندگان
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