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New materials for ESR dosimetry
Linköping University, Department of Physics, Chemistry and Biology, Chemical Physics . Linköping University, The Institute of Technology.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radio Physics.
Linköping University, Faculty of Health Sciences. Linköping University, Department of Medicine and Care, Radio Physics.
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2002 (English)In: Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy, ISSN 1386-1425, E-ISSN 1873-3557, Vol. 58, no 6, 1301-1311 p.Article in journal (Refereed) Published
Abstract [en]

New materials for electron spin resonance (ESR) dosimetry have been investigated with the aim to find systems more sensitive than L-alanine accepted as a standard for high dose determinations. Among the investigated systems ammonium tartrate, 2-methylalanine, salts of formic acids and dithionates have been found to be more sensitive than alanine by a factor 2-10. The lower limit applies to tissue equivalent materials, while much higher sensitivities were obtained with formates and dithionates containing heavier atoms. The increased sensitivity was mainly attributed to suitable ESR properties of the room temperature stable radicals as regards spectral shape (narrow lines, little or no hyperfine structure) and microwave saturation properties (short relaxation times). The radical structures have when necessary been clarified by ENDOR spectroscopy, while the saturation properties have been screened by pulsed ESR measurements.

Place, publisher, year, edition, pages
2002. Vol. 58, no 6, 1301-1311 p.
Keyword [en]
ESR, dosimetry, new materials, tartrate, 2-methylalanine, formate, dithionate
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-26918DOI: 10.1016/S1386-1425(01)00719-3Local ID: 11542OAI: oai:DiVA.org:liu-26918DiVA: diva2:247468
Available from: 2009-10-08 Created: 2009-10-08 Last updated: 2017-12-13

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Lund, AndersOlsson, SaraLund, EvaGustafsson, Håkan

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Chemical Physics The Institute of TechnologyFaculty of Health SciencesRadio Physics
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Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy
Medical and Health Sciences

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