Experimental investigation of the mass attenuation coefficients, atomic, molecular and electronic cross-sections, effective atomic numbers, and electron densities for compounds of Mn, Co, Ni, Cu and Zn essential-trace elements

Yıl 2019, , 855 - 867, 28.06.2019

Burcu Akça

https://doi.org/10.25092/baunfbed.654509

Öz

In this study, the mass attenuation coefficients of compounds (MnF3, MnBr2, CoCl2, CoF2, Co(NO3)2, NiF2, NiSO4, CuSO4, CuF2, CuI, ZnC4H6O4 and, ZnSO4.7H2O) of Mn, Co, Ni, Cu and, Zn essential-trace elements which play a key role in the life of living organism have been measured by using Energy Dispersive X-ray Fluorescence Spectrometer (EDXRFS), a high-resolution Si(Li) detector and, an Am-241 point source with 59.54 keV energy. The atomic, molecular and electronic cross-sections, effective atomic numbers, and electron densities have been determined by using the measured mass attenuation coefficients. Obtained experimental results have been compared with theoretical values of WinXCom and FFAST programs. Although the results of the experiment were in agreement with the results of both theoretical programs, it was observed that gave better results of the FFAST program which was not based on the mixture rule logic.

Anahtar Kelimeler

Essential-trace elements, EDXRFS, WinXCom, FFAST

Mn, Co, Ni, Cu ve Zn esansiyel-eser elementlerinin bileşikleri için kütle soğurma katsayıları, atomik, moleküler ve elektronik tesir kesitleri, etkin atom numaraları ve elektron yoğunluklarının deneysel incelenmesi

Öz

Bu çalışmada, canlıların yaşamında kilit rol oynayan Mn, Co, Ni, Cu ve Zn esansiyel-eser elementlerinin bileşiklerinin (MnF3, MnBr2, CoCl2, CoF2, Co(NO3)2, NiF2, NiSO4, CuSO4, CuF2, CuI, ZnC4H6O4 ve ZnSO4.7H2O) kütle soğurma katsayıları Enerji Ayrımlı X-ışını Floresans Spektrometresi (EDXRFS), yüksek çözünürlüklü bir Si(Li) detektör ve 59,54 keV enerjiye sahip bir Am-241 nokta kaynak kullanılarak ölçülmüştür. Ölçülen kütle soğurma katsayıları kullanılarak atomik, moleküler, elektronik tesir kesitleri, etkin atom numaraları ve elektron yoğunlukları belirlenmiştir. Elde edilen deneysel sonuçlar WinXCom ve FFAST programlarının teorik değerleriyle karşılaştırılmıştır. Deney sonuçları, her iki teorik program sonuçlarıyla uyum gösterse de, karışım kuralı mantığına dayanmayan FFAST programının daha iyi sonuç verdiği gözlenmiştir.

Anahtar Kelimeler

Esansiyel-eser elementler, EDXRFS, WinXCom, FFAST

Kaynakça

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