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Ammonium Dithionate – a New Material for Highly Sensitive EPR Dosimetry
Linköping University, Department of Medicine and Health Sciences, Radiation Physics . Linköping University, Faculty of Health Sciences.
Linköping University, Department of Physics, Chemistry and Biology. Linköping University, The Institute of Technology.
Linköping University, Department of Medicine and Health Sciences, Radiation Physics . Linköping University, Faculty of Health Sciences.
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2008 (English)In: Spectrochimica Acta Part A - Molecular and Biomolecular Spectroscopy, ISSN 1386-1425, E-ISSN 1873-3557, Vol. 69, no 1, p. 18-21Article in journal (Refereed) Published
Abstract [en]

Polycrystalline ammonium dithionate has been examined for its radiation response in the low dose range (< 5 Gy) using EPR technique. The •SO3- radical ion was detected as a single EPR line with a peak-to-peak derivative width of ca. 0.44 mT in irradiated samples and its intensity was found to vary linearly with dose. At equal and moderate settings of microwave power and modulation amplitude ammonium dithionate was at least 7 times more sensitive than L-alanine which is the most common EPR dosimeter standard. Pulse experiments were performed on the powder samples to obtain the longitudinal relaxation time. These and microwave saturation experiments served to indicate the optimal microwave power to be applied during measurements as an EPR dosimeter for best sensitivity of this material. It is thus claimed that ammonium dithionate has excellent potential to become an EPR dosimeter with a low limit of the measurable dose for cases where tissue equivalence is not required or can be corrected for.

Place, publisher, year, edition, pages
Institutionen för fysik, kemi och biologi , 2008. Vol. 69, no 1, p. 18-21
Keywords [en]
EPR, EPR dosimetry, Ammonium dithionate
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-10581DOI: 10.1016/j.saa.2007.03.001OAI: oai:DiVA.org:liu-10581DiVA, id: diva2:17316
Note
Original publication: M. Danilczuka, H. Gustafsson, M.D. Sastry, E. Lund and A. Lund, Ammonium Dithionate – a New Material for Highly Sensitive EPR Dosimetry, 2008, Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, (69), 1, 18-21. http://dx.doi.org/ 10.1016/j.saa.2007.03.001. Copyright: Copyright: Elsevier B.V., http://www.elsevier.com/Available from: 2008-01-18 Created: 2008-01-18 Last updated: 2017-12-14

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Gustafsson, HåkanLund, EvaLund, Anders

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Radiation Physics Faculty of Health SciencesDepartment of Physics, Chemistry and BiologyThe Institute of TechnologyChemical Physics
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