Development of ammonium tartrate as an ESR dosimeter material for clinical purposes

Autor:	Eva Lund, Sara Olsson, Anders Lund
Rok vydání:	2000
Předmět:	Alanine Radiation Dosimeter Free Radicals Chemistry Radiochemistry Electron Spin Resonance Spectroscopy Analytical chemistry Linear energy transfer Deuterium Electron transfer Evaluation Studies as Topic Absorbed dose Humans Linear Energy Transfer Irradiation Radiometry Tartrates
Zdroj:	Applied Radiation and Isotopes. 52:1235-1241
ISSN:	0969-8043
DOI:	10.1016/s0969-8043(00)00077-4
Popis:	The crystalline substance ammonium tartrate is investigated with respect to its suitability as a clinical dosimetry material. The properties investigated are: the radical stability for absorbed doses relevant for clinical use, the improvement in sensitivity when the crystals are deuterated and the linear electron transfer (LET)-dependence. After photon irradiation to an absorbed dose of 20 Gy, the signal increases rapidly during the first 6 h. After this period, the changes are more moderate and can be corrected for. The signal-to-noise ratio of irradiated ammonium tartrate is twice the corresponding value of alanine. By deuterating the crystals, the sensitivity can be further improved by a factor of 1.4. As expected, the signal decreases with increasing LET of the radiation, but no changes in the spectrum shape was observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6c67a2e98b3aeb84f5cc727f3f5f0e30 https://doi.org/10.1016/s0969-8043(00)00077-4 Zobrazit plný text záznamu Full Text from ScienceDirect