Other
Scientific paper
Jan 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988e%26psl..87..216g&link_type=abstract
Earth and Planetary Science Letters, Volume 87, Issue 1-2, p. 216-228.
Other
5
Scientific paper
It is becoming commonplace to suggest that fission track annealing in apatite can be described by first-order kinetics; that is, the decrease in track density and/or length with time during isothermal annealing can be described by a single exponential equation. A review of the literature reveals that there is no convincing evidence for such an assertion, but more than ample evidence to the contrary. Simple graphical analysis of available annealing data from the literature clearly shows that the single exponential fails to adequately describe the data. More rigorous statistical model fitting is not attempted, due to the generally inadequate specification of annealing data in the literature. Most published annealing data suffer from flaws in experimental design that render them of limited value in defining viable kinetic models for the annealing process. Consideration of the processes taking place during annealing suggests that there is no good reason why first-order kinetics would be expected to describe fission track annealing, and more complex models should be considered. In order to provide reliable data, capable of yielding practically useful kinetic models, laboratory annealing experiments should be designed to meet a number of strict criteria. In identifying viable models, the need is for those which adequately describe the data, rather than for ``physically meaningful'' models, although models should preferably be kept as simple as possible.
Duddy Ian R.
Green Paul F.
Laslett G. M.
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