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Mossbauer Effect Study of Libyan Desert Silica Glass

Sallam, H. A. [هناء جمد الغني سلام]; Eissa, N. A. [نبيل عيسى] ( Qatar University , 1981 , Article)

The Mossbauer effect and X-ray fluorescence techniques are applied to study the Libyan Desert Silica Glass. The X-ray flourescence proved the existence of 13 elements in each sample of five glass types with differences in ...

Study of the Hydration of Blast-Furnace Slag Cement and Portland Cement by Mossbauer Spectroscopy

Eissa, N. A. [نبيل عيسى]; Hassaan, M. Y.; Salah, S. H.; Sallam, H. A.; Abo-El-Enein, S.A. ( Qatar University , 1982 , Article)

Mossbauer spectra have been measured for the hydrated blast-furnace slag cement and Portland cement pastes at different times of hydration of 1. 3. 7. 28 and 90 days. The spectra showed the existence of iron atoms, Fe3 (T) ...

استخدام ظاهرة الرنين النووي (ظاهرة موسباور) في مجمال دراسة فخار الآثار القديمة

Eissa, N. A. [نبيل عيسى] ( Qatar University , 1981 , Article)

أصبح استخدام الطرق العلمية الموضوعية لازماً لتأكيد النتائج الذاتية التي يتوصل إليها علماء الآثار، وطريقة طيف موسباور المستخدمة في البحث الحالي تعتبر أحدث الطرق العلمية الفيزيائية التي استخدمت في مجال دراسة الفخار الذي عثرت ...

Mossbauer Effect Study of the Cations Distribution and its Influence on the Electric Field Gradient of the Cdx Co1-x Ferrite System

Eissa, N. A. [نبيل عيسى]; Sallam, H.A.; Salah, S.H.; Goma, S.S. ( Qatar University , 1982 , Article)

In the ferrite system Cd,Co,_x Fe; 04 (X=0.0, O.I, 0.2, ....... , 1.0). it was found that the introduction of Co2'1' decrease the EFG at the octahedral B-site. This was attributed to the distributions of the different ...

Mossbauer Effect Study of the Hyper fine Structure of the Different Phases of Iron in the Portland Cement Produced in Qatar

Eissa, N. A. [نبيل عيسى]; Sallam, H. A.; Al-Houty, L.; Al-Mauraikhy, M. ( Qatar University , 1981 , Article)

Various samples of the raw materials used in the manufacture of Portland cement in Qatar, the clinker produced and the cement itself were studied by using Mossbauer Effect and X-ray diffraction analysis in order to investigate ...

Study of Magnetic Properties and Lattice Dynamics of the Cdx Co1-x Ferrite System by MossbauerEffect

Eissa, N. A. [نبيل عيسى]; Fayek, M. K.; Hassan, M. Y.; Salah, S. H.; Sallam, H. A. ( Qatar University , 1981 , Article)

The magnetic properties and lattice dynamics of the spinel ferrite system Cdx Coi-x Fe^ 04 (x = 0.0, 0.1, . . . , and 1.) were studied in the temperature range between 78 to 800°K. The results showed that the samples with ...