| 金云母中Alpha反冲径迹的蚀刻和退火行为 |
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| 关键词:Alpha recoil track phlogopite etching behavior annealing behavior |
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| Etching and Annealing Behaviors of Alpha Recoil Tracks in Phlogopite |
| When U and Th as well as their daughter nuclei emit apariticles afteradecays, the heavy residual nuclei are recoiled, leaving behind a trail of radiation damge in the mineral. The trail of radiation damage becomes a nuclear tracke when it is etched by chemical reagent under proper etching conditions. Then it can be observed under the phase-contrast interference microscope. It is proved that the number of ARTs increases linearly with the etching time during the initial etching process. With the increase of the etching time,the linearity is destroyed, and finally reaches a "plateau". ARTs are annealed much more easily than fission tracks, as can be observed from the annealing process of ARTs. The annealing ratio increases with both annealing time and temperature, with thd temperature exerting an obvious effect on it. It reaches 90% when the sample is heated for 20 hours under 350℃，and 100% when the sample is heated for 4 hours at 400℃. |
| GAO Shaokai,YUAN Wanming,DONG Jinquan,BAO Zengkuan.2005.Etching and Annealing Behaviors of Alpha Recoil Tracks in Phlogopite[J].Acta Geoscientica Sinica,26(z1):262-266. |
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