The effective atomic number and the mass attenuation coefficient of a multicomponent object for the continuous spectrum of the radiation
| Autor: | Vjacheslav Gorshkov |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
010302 applied physics
Physics business.industry Mean free path Mechanical Engineering Attenuation Continuous spectrum General Physics and Astronomy Radiation 01 natural sciences Computational physics Optics Mechanics of Materials Attenuation coefficient 0103 physical sciences General Materials Science Mass attenuation coefficient business 010301 acoustics Finite thickness Effective atomic number |
| Zdroj: | Nondestructive Testing and Evaluation. 32:79-89 |
| ISSN: | 1477-2671 1058-9759 |
| DOI: | 10.1080/10589759.2016.1146718 |
| Popis: | Determination of the effective atomic number is extremely important in the density measurement of multicomponent objects. With regard to the densitometry value of a numeric effective atomic number (including fractional) must correspond to the approximate values of mass attenuation coefficient, for which the attenuation of radiation is the same as for multi-component object. It is shown that for continuous spectra of X-ray radiation concepts of mass attenuation coefficient of such objects and its effective atomic number can be entered only for infinitely thin samples. This coefficient determined by shares registered radiation of multicomponent object with finite thickness depends on the distribution of the average density and thickness of the object. However, this contradicts physical meaning of the mass attenuation coefficient, which may not depend on these characteristics. The same applies to the effective atomic number, defined by dual-energy method. It is shown that only an average mass attenua... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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