Constraints on the precision of SAR in equivalent dose estimations close to saturation in quartz

Geochronometria

Constantin Athanassas¹ 

[1] Institute of Materials Science, N.C.S.R. ‘Demokritos’

关键词: SAR precision;    equivalent dose distributions;    scatter;    dose recovery;    slope;   

DOI  :  10.2478/s13386-011-0046-1

学科分类：社会科学、人文和艺术（综合）

来源: Politechnika Slaska * Instytut Fizyki

【 摘 要 】

Difficulties in evaluating accurate equivalent doses for Late Quaternary sediments from the south coasts of Greece arose in the course of SAR measurements. Large scatter among apparent equivalent doses perplexed the evaluation of accurate mean estimates in circumstances where very large doses were involved. Besides, dose recovery experiments revealed that when intersection of the natural signal occurs onto the saturating segment of the growth curve, a distinct relationship between De and growth curve shape occurs. At very low slope angles, SAR tends to overestimate the recovered dose. The mechanism which controls the spread in equivalent dose estimation is investigated.

【 授权许可】

Unknown