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Application of nuclear techniques for characterization of materials surfaces : own investigations examples

Sartowska B., Piekoszewski J., Waliś L., Starosta W., Barlak M., Nowicki L., Ratajczak R.

Nukleonika

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2012

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Vol. 57, No. 4

521-528

EN

Different methods and techniques for material characterization are often used as a standard procedure for the determination of material properties. Nuclear techniques provide new and more detailed information about the investigated materials. The main goal of the carried out experiments was to improve surface properties including wear, corrosion and high temperature oxidation resistance. Modification processes were carried out using high intensity pulsed plasma beams - HIPPB (106-108 W.cm-2) generated in a rod plasma injector (RPI). In most solid materials such treatment leads to a fast transient melting of the surface layer of the substrate followed by rapid crystallization. Heating and cooling processes are of non-equilibrium type. Initial and modified materials were characterized using different investigation methods including nuclear techniques. Results of the used nuclear techniques such as nuclear reaction analysis (NRA), Rutherford backscattered spectroscopy (RBS) and conversion electron Mössbauer spectroscopy (CEMS) are presented in the paper.

2

Role of nuclear and radiation technologies in oil, gas and coal mining, distribution and power sector applications

Chmielewski A. G.

Nukleonika

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2008

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Vol. 53, suppl. 2

55--59

EN

Nuclear and radiation technologies play an important role in power sector, starting from fossil fuels exploitation, their transport and distribution and finally power generation. Application of environmental isotopes, stable and radioactive, in ground water monitoring in the vicinity of open cast lignite mine, radon monitor applied for miner’s safety in deep coal mines and nucleonic control systems for ash in coal control are discussed in the paper. Other applications of nuclear techniques reviewed, concern the oil industry, oil field recovery, transportation pipelines and refineries. Finally, the application of beta radiation-based gauges for air borne fly ash monitoring and radiation technology for flue gas treatment are the examples of using this technique in power sector equipped with coal and oil fired boilers.

3

Element depth profiling of implanted samples

Kobzev A.P.

Nukleonika

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1999

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Vol. 44, nr 2

309-316

EN

Nuclear techniques, namely Rutherford Back Scattering (RBS) and Elastic Recoil Detection (ERD) have been used in the analysis of the implanted samples. The sensitivity of the RBS method depends on the atomic number of the implanted elements as Z[indeks górny]2. Thus, there is a possibility of measuring very low concentrations of heavy ions implanted in a light matrix. The depth profile of oxygen was obtained using elastic resonance in the nuclear reaction 16O(4He, 4He)16O at 3.045 MeV of 4He ions. The ERD technique was applied to obtain the depth profile of hydrogen. Some problems concerning the roughness of the implanted samples are discussed as well.

PL

Do badań implantowanych próbek użyto metod jądrowych opartych na efekcie rozpraszania wstecznego Rutherforda (RBS) i elastycznego odrzutu (ERD). Czułość metody RBS zmienia się wraz z liczbą atomową Z implantowanego pierwiastka, jak Z[indeks górny]2, co daje możliwość pomiaru nawet bardzo niewielkiej koncentracji ciężkich, implantowanych do lekkich tarcz, jonów. W przypadku głębokościowych rozkładów koncentracji tlenu do badań zastosowano rezonansową reakcję jądrową 16O(4He, 4He)16O dla jonów 4He o energii 3.045 MeV. Natomiast technikę ERD zastosowano w badaniach głębokościowych profili wodoru. W pracy omówione są także pewne problemy związane z chropowatością warstw implanowanych próbek.