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Article Dans Une Revue Scientific Reports Année : 2020

Comparison of phosphor screen autoradiography and micro-pattern gas detector based autoradiography for the porosity of altered rocks

Résumé

Abstract This study aims to further develop the 14 C-PMMA porosity calculation method with a novel autoradiography technique, the Micro-pattern gas detector autoradiography (MPGDA). In this study, the MPGDA is compared with phosphor screen autoradiography (SPA). A set of rock samples from Martinique Island exhibiting a large range of connected porosities was used to validate the MPGDA method. Calculated porosities were found to be in agreement with ones from the SPA and the triple-weight method (TW). The filmless nature of MPGDA as well as straightforward determination of C-14 radioactivity from the source rock makes the porosity calculation less uncertain. The real-time visualization of radioactivity from C-14 beta emissions by MPGDA is a noticeable improvement in comparison to SPA.
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Dates et versions

hal-04122460 , version 1 (19-01-2024)

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C. Delayre, J. Sammaljärvi, Sophie Billon, E. Muuri, Paul Sardini, et al.. Comparison of phosphor screen autoradiography and micro-pattern gas detector based autoradiography for the porosity of altered rocks. Scientific Reports, 2020, 10 (1), pp.9455. ⟨10.1038/s41598-020-65791-7⟩. ⟨hal-04122460⟩
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