Physics
Scientific paper
Sep 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30rsde7c&link_type=abstract
Geophysical Research Letters, Volume 30, Issue 18, pp. SDE 7-1, CiteID 1949, DOI 10.1029/2003GL018028
Physics
2
Geochemistry: Geochronology, Mineralogy And Petrology: Experimental Mineralogy And Petrology, Mineral Physics: Defects, Mineral Physics: Optical, Infrared, And Raman Spectroscopy, Physical Properties Of Rocks: Thermal Properties
Scientific paper
The presence of hydrated diaspore (α-AlOOH) on the Martian surface allows us to speculate that this material could act as: α-Al2O3 precursor and water source. In this study, new analytical data on the thermoluminescence (TL) properties of natural diaspore from Goian (Pontevedra, Spain) in the UV-blue spectral region are reported. The results indicate that it could be also used as a dosimeter for dating purposes, since it possesses an acceptable sensitivity to radiation, reproducibility, linear dose response in the studied range (up to 100 Gy), and a high stability of the relative TL emission after six months of storage. Some physical trapping parameters for each irradiated curve (trap depth, pre-exponential factor, intensity and peak position) are estimated assuming first order kinetics for the 180°C TL peak.
Correcher Virgilio
García-Guinea Javier
Valle-Fuentes Francisco José
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