اعلانات هامة

Laser applications have spread over all domains, and has been the main tool in modern technologies. Its role has become manifest in spectral techniques, thus, it has opened the way for new methods in chemical analysis of substances. It has constituted with other modern spectral tools a new, rapid and precise technique for remote analyzing of substances. 

This paper presents laser induced breakdown spectroscopy (LIBS) technique to compare the chemical composition of Syrian pounds with European coins (the Swiss krona and the euro) by means of 532nm laser. 

It is shown that The LIBS technique may cover three distinct spectral regions in the range (340 – 510 nm). Each spectral region has its ability for detection of specific elements in metallic coins. The paper shows that Syrian mould used in producing metallic coins differs with its counterparts from other countries. It has some chemical elements of very low concentration but it is devoid of chemical elements that are present in other coins.

Keywords: metallic coins analysis, excitation spectrums, laser induction.

انتشر استخدام الليزر في معظم المجالات ، وأصبح الأداة الرئيسية في التقانات الحديثة. وظهر دوره واضحاً في التقانات الطيفية، ففتح مجالات جديدة لأساليب تحليل المواد الكيميائية ، وكوّن مع الأدوات الطيفية المتطورة تقانة دقيقة وسريعة لتحليل المواد عن بعد.