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|Type:||Artigo de periódico|
|Title:||Contribution To Statistics In Fission Track Counting|
|Abstract:||In order to test the new statistical model proposed in two papers by McGee, Johnson and Naeser for calculating the standard error in fission track dating, spontaneous and induced track counts from external detector method-EDM-or similar were simulated by random numbers, assuming that, for a given uranium content, fission tracks were spatially distributed according to Poisson distributions. By the results of such a simulation it can be concluded that: 1. (1) In EDM, (1/nS + 1/nI)1 2 represents a reliable evaluation of the relative standard error of ρS/ ρI - ratio of spontaneous to induced track densities in a sample in which nS spontaneous and nI induced tracks were counted. 2. (2) The new model confirms the validity of the above conclusion, by applying it to the spontaneous and induced track counts whose relative standard deviations of the means were evaluated by normal sampling statistics. Population method-PM-data were also simulated; (σ'2 S + σ'2 I)1 2, where σ' S and σ'I are the above relative standard deviations of the mean, offers a reliable evaluation of the uncertainty of ρS/ρI ratio for the simple cases analyzed in the present work. © 1986.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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