INSTITUTE OF RADIATION PROBLEMS
AZERBAIJAN NATIONAL ACADEMY OF SCIENCES
DEPARTMENT OF PHYSICAL, MATHEMATICAL AND TECHNICAL SCIENCES
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Structure

Laboratory of “Radiation Chemistry of Heterogeneous Processes”

Tel: (+994 12) 5383224
Fax: (+994 12) 5398318
E-mail: agayevteymur@rambler.ru

Adil Abdulkhalig Garibov

Theme leader:
Adil Abdulkhalig Garibov
Active member of ANAS, Honored Science Worker, professor, Doctor of Chemistry

Teymur Nematullah Aghayev

Head of the structural unit:
Teymur Nematullah Aghayev
Ph.D. in Chemistry

Main area of activity of the structural unit: Conduct energy-intensive petrochemical processes using nuclear energy; Convert nuclear energy by hydrogen for utilization; Nuclear reactor safety and increas radiation resistance of metals.

Main scientific achievements of the structural unit: Laws of the radiation processes progressing in contact with metals and metal-oxide systems in different media have been determined and the ways of increasing their radiation resisance have been revealed. The kinetics of stainless steel oxidation due to the radiation-thermal processes progressing in contact of stainless steel previously exposed to radiation-oxidation with water and hexane has been studied.
The composition and the thickness of the surface oxide layer formed at the result of radiation oxidation of stainless steel (s.s.) have been revealed. It has been established that the protective oxide layer is nano-sized, and is composed of ɑ-Fe2O3 Cr2O3, ɑ-Fe3O4 and oxides of other elements. It has been revealed that the radiation-thermal and thermal processes progressing in contact of stainless steel exposed to radiation-oxidation with n-C6H14 induce surface processes. Due to this effect the yield of molecular hydrogen and light hydrocarbons increases and the activation energy (Ea) of the process decreases.
It has been determined that at low doses of ɣ-radiation during the primary effect defect states and surface free O- holes form on the oxide layer of stainless steel and this results in decrease of specific electric resistance.
A microscopic AGM study of the aluminium surface exposed to ɣ-radiation and which is in contact with water proves once more the formation of passive oxide layer at dose rate (DƔ=0.5-150kGy). A microscopic AGM study of the aluminium surface exposed to ɣ-radiation and which is in contact with hexane reveals that large-size hybrid nanoclusters have formed at dose rate (DƔ=0.5-150kGy). This experimentally proves the theoretically proposed hypotheses of their possible role in conductivity mechanism.
The oxidation of beryllium surface in contact with water under the effect of thermal and radiation-thermal processes shows that both hydrogen production and the change in the optical density of the absorption band of Be-O bond valence fluctuations run according to the following laws:
• Up to the surface behaves as a pure metal, i.e. the radiation-chemical processes on the surface progress at a very low rate;
• After the value of the absorbed dose equal to 60kGy the surface passivizes. The surface behaves as an amorphous medium. The rate of the radiation-chemical processes decreases for 25-30 times.