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Quality estimation the of maximum-likelihood algorithm to the task of space distribution of elements by PIXE
The numerical research is carried out for different approximations of likelihood-function and Fisher's matrix with reference to maximum-likelihood algorithm at determination of impurity profile of certain chemical element in researched sample by PIXE. It is shown, that the testing of this alg...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Інститут фізики твердого тіла, матеріалознавства і технологій ННЦ ХФТІ України
2008
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| Series: | Вопросы атомной науки и техники |
| Subjects: | |
| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/111074 |
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| Summary: | The numerical research is carried out for different approximations of likelihood-function and Fisher's matrix
with reference to maximum-likelihood algorithm at determination of impurity profile of certain chemical element in
researched sample by PIXE. It is shown, that the testing of this algorithm, previously led, points to a basic opportunity
of its application for restoration of impurity profile by PIXE. However, its practical application causes difficulties,
and the expression offered earlier for likelihood-function does not allow determining accuracy of restoration of
impurity profile. The problems preventing from opportunity of practical use of algorithm are studied. |
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