تقدير احتمال انتقال اوجيه KLL في الفوسفور والصوديوم من المركب Na3PO4 بوساطة النموذج الهيدروجيني
Abstract
This paper aims at studying KLL Auger transitions in P and Na of the Na3PO4 compound and estimating the Auger transition probability with the help of hydrogenic model.
This paper contains comparison between the following quantities: Auger transition probabilities, transition shifts and their intensities represented by area of peak in the spectrum for P and Na. We found a reciprocal relation between shifts for both elements mentioned above.
It is known that phosphorus is a constituent in various semiconductors, for example, InP, GaP, AlP ….etc which have widely practical applications.
On the one hand, studying changes of the Auger transition energies between compound and element – the chemical shift- points out the shift orientation of the density of electrons of atoms inside compound.
On the other hand, the contaminants C,N and O existed on the surface layer of specimen contribute to chemical shifts.
In addition, the Auger transition probability is considered as an important factor for knowing the yield of Auger electrons.
يهدف هذا العمل إلى دراسة انتقالات اوجيه من النوع KLL في ذرتي الفوسفور والصوديوم من المركب Na3PO4, وتقدير احتمال هذا الانتقال بمساعدة النموذج الهيدروجيني.
ويحتوي هذا العمل على مقارنة بين احتمال انتقالات اوجيه وانزياحاتها, وشدتها المعّبر عنها بالمساحة الواقعة تحت القمة في الطيف المأخوذ للفوسفور والصوديوم. ولقد وجدنا علاقة عكسية بين انزياحات انتقالات اوجيه لكلا العنصرين المذكورين أعلاه. وتأتي أهمية هذا من حقيقة أن الفوسفور يدخل في العديد من أشباه النواقل مثل InP, GaP, AlP... الخ التي لها تطبيقات عملية واسعة.
إن دراسة تغيير طاقة انتقال اوجيه بين المركب والعنصر أو ما يدعى بالانزياح الكيميائي تشير إلى اتجاه انزياح كثافة الإلكترونات للذرة داخل المركب, هذا من جهة.
ومن جهة أخرى, تساهم الشوائب C, N, O الموجودة على الطبقة السطحية للعينة في عملية الانزياح الكيميائي.
علاوة على ذلك, يعتبر احتمال انتقال اوجيه عاملاً مهماً في معرفة مردود إلكترونات اوجيه.
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