INITIAL TL/OSL/EPR CONSIDERATIONS FOR COMMERCIAL DIATOMACEOUS EARTH IN RETROSPECTIVE DOSIMETRY AND DATING

被引：0

作者：

Hayes, Robert B. ^{[1
]}

O'Mara, Ryan P. ^{[1
]}

Hooper, David A. ^{[2
]}

机构：

[1] North Carolina State Univ, Nucl Engn Dept, 2500 Stinson Dr, Raleigh, NC 27695 USA

[2] Oak Ridge Natl Lab, Nucl Secur Modeling Grp, 1 Bethel Valley Rd, Oak Ridge, TN USA

来源：

RADIATION PROTECTION DOSIMETRY | 2019年 / 185卷 / 03期

基金：

美国国家科学基金会;

关键词：

THERMOLUMINESCENCE MEASUREMENTS; WATCH GLASSES; ESR RESPONSE; QUARTZ; DIATOMS; GROWTH; OCEAN;

D O I：

10.1093/rpd/ncz013

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Diatomaceous earth is found in various locations around the planet. It is caused by the deposited exoskeleton material formed by the death of large concentrated populations of diatoms. The exoskeleton is effectively pure silicate and as such becomes a prospective material for retrospective dosimetry and dating. This work investigated the thermoluminescence (TL) and optically stimulated luminescence properties of commercially obtained diatomaceous earth. The material was not found to have useful dosimetric properties with conventional TL methodologies but did provide large dose estimates using the Single Aliquot Regeneration technique on some subset samples. These findings for organic silicate did suggest some mechanisms explaining the sensitization process in geological silicate materials utilized in dosimetry and dating. Electron paramagnetic resonance was identified as a potential future method for evaluating this material as it revealed unique signal components not found in igneous or commercially produced silicates.

引用

页码：310 / 319

页数：10

共 8 条

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