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Title: Initial TL/OSL/EPR considerations for commercial diatomaceous earth in retrospective dosimetry and dating

Abstract

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 studied 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 results for organic silicate did imply 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.

Authors:
 [1];  [2]; ORCiD logo [3]
  1. North Carolina State Univ., Raleigh, NC (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  2. North Carolina State Univ., Raleigh, NC (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation (NA-20)
OSTI Identifier:
1507841
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Radiation Protection Dosimetry
Additional Journal Information:
Journal Name: Radiation Protection Dosimetry; Journal ID: ISSN 0144-8420
Publisher:
Oxford University Press
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY

Citation Formats

Hayes, Robert B., O'Mara, Ryan, and Hooper, David A.. Initial TL/OSL/EPR considerations for commercial diatomaceous earth in retrospective dosimetry and dating. United States: N. p., 2019. Web. doi:10.1093/rpd/ncz013.
Hayes, Robert B., O'Mara, Ryan, & Hooper, David A.. Initial TL/OSL/EPR considerations for commercial diatomaceous earth in retrospective dosimetry and dating. United States. doi:10.1093/rpd/ncz013.
Hayes, Robert B., O'Mara, Ryan, and Hooper, David A.. Tue . "Initial TL/OSL/EPR considerations for commercial diatomaceous earth in retrospective dosimetry and dating". United States. doi:10.1093/rpd/ncz013.
@article{osti_1507841,
title = {Initial TL/OSL/EPR considerations for commercial diatomaceous earth in retrospective dosimetry and dating},
author = {Hayes, Robert B. and O'Mara, Ryan and Hooper, David A.},
abstractNote = {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 studied 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 results for organic silicate did imply 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.},
doi = {10.1093/rpd/ncz013},
journal = {Radiation Protection Dosimetry},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
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This content will become publicly available on February 26, 2020
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