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Register a new userAnalytical and experimental study of the Rutherford scattering cross section
دراسة تحليلية و تجريبية للمقطع العرضي التفاضلي لتبعثر رذرفورد
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تم، في هذا العمل، تسجيل عدد جسيمات ألفا الصادرة عن منبع من الأمريسيوم-241، و المتبعثرة على وريقات رقيقة من الذهب و الألمنيوم بتابعية زاوية التبعثر، باستخدام كاشف نصف ناقل و غرفة تبعثر رذرفورد. تم أيضاً قياس المقطع العرضي التفاضلي عن الناتج عن هذا التبعثر، و حساب العدد الذري للهدف تجريبياً، لكل من الذهب و الألمنيوم. مقارنة النتائج التجريبية بالنتائج النظرية يشير إلى تطابق جيد بينهما.
In this work, it has been recording the alpha particles emitted from an Amerecium-241 source, and scattered by a gold and Aluminum thin foils as a function of the scattering angle q (0o-30o), using a semiconductor detector and Rutherford scattering chamber. It always has been measuring the differential cross section resulting from this scattering, and experimentally determining the atomic number of Gold and Aluminum. Comparison between experimental and theoretical results shows a good agreement.
References used
E. H. Wickmann, Quantum Physics. Berkeley course, New York, McGraw Hill, 1967, Chap. 6 and 9
E. Merzbacher, Quantum Mechanics. New York, John Wiley, 1962, chap. 12
C. Cohen-Tannoudji, B. Diu et F. Laloë, Mécanique Quantique. Paris, Hermann, 1973, chap. VIII
Messiah, Mécanique Quantique. Paris, Dunod, 1960. Vol. 1, chap. X
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for X-ray
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In addition, the relative scattered intensity and po
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CdTe Thin films were deposited on glass substrates by thermal evaporation
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based on reflectance curve recorded with the spectrophotometer. The XRD
analysis and optical char
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thicknesses reveals that the structure of the films is polycrystalline with
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The detector calibration NaI(Tl) and the resolution of the spectrom
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Measuring and determining the activity of a source can be doneby using the
relative, and the absolute method.
The results obtained show bythe Comparison between the experimental and the
theoretical(of the sources activities)a good agreement, and the best values obtained by the
absolute method.
Slabs are considered one of the most exposed elements to disasters and deformities
that can be clear to the viewer. These deformities are reflected as sign of defects that
appear clearly on big slabs. So, here comes the importance of applying and d
esigning
accurate slabs.
The purpose of this research is stating the need for persistent efforts to get a better
form of the slabs in order to increase their ability to be able to carry any outside extra
weights without the appearance of any deformities that might take place during the period
of investing the building. When deformities happen, they have bad effect on the beauty
and main function (purpose) of the building.
This research includes an experimental study for the real applicable slabs under our
supervision, in addition to a theoretical study about the deflection appearing on the slabs
by taking into consideration the plastic specifications of the concrete and the formation of
cracks.
This research aims at constructing reflexive deflections in the slabs during the
construction period and measuring the actual deformities and watching them through a
period of time, then comparing them with the theoretical expected deformities.
The findings that we could get at the end of our research are supposed to play a main
role in choosing the best design for the mandate slabs and at the same time getting the best
value for the reflexive deflection that can be used in the slab to make it better functionally
and to increase its ability to resist the outside applied weights. We hope this is just a start
for more research in this field.
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