Formates and dithionates: sensitive EPR-dosimeter materials for radiation therapyShow others and affiliations
2005 (English)In: Applied Radiation and Isotopes, ISSN 0969-8043, E-ISSN 1872-9800, Vol. 62, no 2, p. 317-324Article in journal (Refereed) Published
Abstract [en]
Polycrystalline, formates and dithionates are promising materials for EPR dosimetry, as large yields of radiation induced stable radicals are formed with a linear dose response. Rapid spin relaxation rates were detected in many of the substances, indicating that a high microwave power can be applied during EPR acquisition in order to improve sensitivity. Different techniques used to further improve the sensitivity, such as the replacement of Li-7 with Li-6 or exchange of protons with deuterons in the corresponding crystalline matrices and metal ion doping are discussed. It is concluded that formates and dithionates may be up to 10 times as sensitive as L-alpha-alanine. (C) 2004 Elsevier Ltd. All rights reserved.
Place, publisher, year, edition, pages
2005. Vol. 62, no 2, p. 317-324
Keywords [en]
dosimetry, EPR, EPR dosimetry, lithium formate, ammonium formate, lithium dithionate, formats, dithionates, radiation therapy dose range, metal ion doping
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:liu:diva-46147DOI: 10.1016/j.apradiso.2004.08.015OAI: oai:DiVA.org:liu-46147DiVA, id: diva2:267043
Conference
6th International Symposium on ESR Dosimetry and Applications, Brazil, 2003
2009-10-112009-10-112023-11-02