Is Low‐Temperature Fission‐Track Annealing in Apatite a Thermally Controlled Process?

Ion-Track Annealing Kinetics in Apatite

Fission tracks in minerals, such as apatite and zircon, generated by energetic nuclear fragments that result from spontaneous fission of U, are used for determining the age and thermal history of Earth’s crust. Taken together with other techniques, the data infer rates of tectonic uplift and landscape evolution [1]. At elevated temperatures, these tracks shrink in size and fragment into section...

Thermal annealing of unetched fission tracks in apatite

a Department of Earth & Environmental Sciences, University of Michigan, Ann Arbor, MI 48109-1005, USA b School of Earth Sciences, The University of Melbourne, Melbourne, Vic 3010, Australia c Institute of Nuclear Physics, National Nuclear Centre, 010008 Astana, Kazakhstan d Department of Nuclear Engineering and Radiological Sciences, University of Michigan, Ann Arbor, MI 48109-2104, USA e Depar...

Thermal annealing mechanisms of latent fission tracks: Apatite vs. zircon

Thermal annealing mechanisms of latent tracks: Apatite versus zircon

Etched tracks of apatite and zircon are both widely used for the determination of the thermal history of Earth’s crust. The present understanding of the annealing process is largely limited to mathematical fits to data for etched track-lengths as a function of temperature and time. Details of the annealing of unetched, latent tracks at the atomic scale have remained elusive, as the original tra...

Liquid pressure measurements in a thermally assisted mechanical dewatering process

The thermally assisted mechanical dewatering process, investigated in this paper, couples in one stage mechanical dewatering at low pressure (Papplied < 1125 kPa) with a moderated heating (T < 80°C). Former studies emphasized that the separation enhancement depends on the product. To identify the mechanisms involved, a 1D filtration/compression cell is instrumented with pore liquid sensors dist...