English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

A major issue in thermochronology and U-Th-Pb dating is the effect of radiation damage, created by  α -recoils from  α -decay events, on the diffusion of radiogenic elements ( e.g ., He and Pb) in host mineral. Up until now, thermal events have been considered as the only source of energy for the recovery of radiation-damage. However, irradiation, such as from the  α -particle of the  α -decay event, can itself induce damage recovery. Quantification of radiation-induced recovery caused by  α -particles during  α -decay events has not been possible, as the recovery process at the atomic-scale has been difficult to observe. Here we present details of the dynamics of the amorphous-to-crystalline transition process during  α -particle irradiations using  in situ  transmission electron microscopy (TEM) and consecutive ion-irradiations: 1 MeV Kr 2+  (simulating  α -recoil damage), followed by 400 keV He +  (simulating  α -particle annealing). Upon the He +  irradiation, partial recrystallization of the original, fully-amorphous Durango apatite was clearly evident and quantified based on the gradual appearance of new crystalline domains in TEM images and new diffraction maxima in selected area electron diffraction patterns. Thus,  α -particle induced annealing occurs and must be considered in models of  α -decay event damage and its effect on the diffusion of radiogenic elements in geochronology and thermochronology.

In situ TEM observation of alpha-particle induced annealing of radiation damage in Durango apatite