liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
EPR dosimetric properties of formates
Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo, Norway.
Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo, Norway.
Linköping University, The Institute of Technology. Linköping University, Department of Physics, Chemistry and Biology, Chemical Physics .
Department of Physics, University of Oslo, P.O. Box 1048 Blindern, N-0316 Oslo, Norway.
Show others and affiliations
2003 (English)In: Applied Radiation and Isotopes, ISSN 0969-8043, Vol. 59, no 2-3, 181-188 p.Article in journal (Refereed) Published
Abstract [en]

As a part of a program to develop an electron paramagnetic resonance (EPR) dosimeter suited for clinical use (doses in the cGy range), polycrystalline samples of lithium formate monohydrate (HCO2Li·H 2O), magnesium formate dihydrate (C2H2O 4Mg·2H2O), and calcium formate (C2H 2O4Ca) have been examined. L-Alanine was included for comparison and reference. Samples were irradiated with 60Co ?-rays and 60-220kV X-rays. The dosimeter response was assessed using the peak-to-peak amplitude of the first-derivative EPR spectrum. Dose-response curves for the 60Co ?-irradiated samples were constructed, and the dependences of the response on the photon energy, microwave power, and modulation amplitude were studied. Stability of the irradiation products upon storage (signal fading) was also investigated. Lithium formate monohydrate is by far the best candidate of the tested formates, suitable for measuring doses down to approximately 0.1Gy. Lithium formate monohydrate is more sensitive than alanine by a factor of 5.6-6.8 in the tested photon energy range, it exhibits no zero-dose signal and shows a linear dose response in the dose range from 0.2 to 1000Gy. Its EPR signal was found unchanged in shape and intensity 1 week after irradiation to 10Gy. Various less favorable properties rendered the other formates generally unsuitable, although calcium formate exhibits some interesting EPR dosimetric properties. © 2003 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2003. Vol. 59, no 2-3, 181-188 p.
Keyword [en]
Dosimetry, EPR, EPR dosimetry, Formates, Lithium formate, Therapeutic range
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-46537DOI: 10.1016/S0969-8043(03)00165-9OAI: diva2:267433
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2011-01-13

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Lund, Anders
By organisation
The Institute of TechnologyChemical Physics
In the same journal
Applied Radiation and Isotopes
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 26 hits
ReferencesLink to record
Permanent link

Direct link