عنوان المقالة: Numerical Treatment Of Laser Interaction With Solid In One Dimension
د.حميد حسام حميد | Hameed Husam Hameed | 5717
نوع النشر
مجلة علمية
المؤلفون بالعربي
حميد حسام حميد
المؤلفون بالإنجليزي
Hameed Husam Hameed & Hayder M Abaas
الملخص الانجليزي
The laser radiation has great important in many applications. In this paper we have studied the influence of laser radiation on solid material. We use a (800 µs) pulsed laser ND: YAG with (1.06 µ m) wave length, (3 J) energy and power density of (7.6 X 106 W/cm2 ) . We have deduced a mathematical function for laser energy with time, then deducing a function for laser power density with time because practically assumed to be constant. A lead material used in this paper for study, we have deduced mathematical functions for thermal properties (conductivity, specific heat, density, diffusivity) with temperature, and solve the partial differential equation (P.D.E) which represent the heat transfer of laser radiation to the material in one dimension, presumes variable and constant laser density ( I=I0 and I=I(t)) , also the thermal properties conductivity , specific heat ,density and diffusivity ( K=K0 and K=K(T),C=C0 and C=C(T), T  0and  ( ) ,du=du0 and du=du(T)) respectively . The results reveal that the time of evaporation increase when the laser density is taken as variable with time , also it increase when the thermal properties were vary with temperature . We used (Matlab 7.0) to perform all programs which related with this paper
تاريخ النشر
17/06/2009
الناشر
JOURNAL OF KUFA – PHYSICS
رابط الملف
تحميل (142 مرات التحميل)
الكلمات المفتاحية
Numerical solutions, laser interaction, solid state
رجوع