Analytical study of opacity and escape factore in laser produced plasma

مقدم أطروحة جامعية

Mahdi, Rahman Ismail

الجامعة

الجامعة التكنولوجية

الكلية

-

القسم الأكاديمي

قسم العلوم التطبيقية

دولة الجامعة

العراق

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2006

الملخص الإنجليزي

An analytical study of spectral lines (in soft x-ray region) of laser produced plasma (LPP) is carried out.

The work is concentrated on two main points, firstly : studying of the opacity broadening of spectral lines and secondly : studying the escape factor of photons.

The opacity broadening and escape factor are studied for Al, C, Mg, Si, Ge and LiF plasmas, the selected wavelengths was (6-35 A) which have a lot of applications in many fields such as biological applications (x-ray microscopy), integrate circuit industry , x-ray laser , x-ray source etc.

The opacity broadening is studied as a function of plasma size and plasma density, the effect of the difference between energy levels of emission spectral lines on opacity of plasma is also studied.

The escape factor which represents the probability of photons to escape from plasma is studied as a function of opacity.

From our results that have been obtained one can notice that the opacity of plasma increases with increases in size and density of plasma, atomic number of target and also it is increases with decreases the difference of energy between energy levels of spectral lines.

We notice also that the escape factor is increases with decreases the opacity, where the escape factor of spectral line of higher series member transitions is very large compare with the escape factor of spectral line of lower series member transitions ,and also we found that the escape factor is decreases with increases the atomic number of the target.

التخصصات الرئيسية

الفيزياء

الموضوعات

• الفيزياء
• الليزر

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-305700