6533b7d1fe1ef96bd125d27f
RESEARCH PRODUCT
Characterization of the ESR response of alanine dosimeters to low-energy (1-40 keV) X-rays
Maurizio MarraleLeonardo AbbeneSalvatore GalloAnna LongoFabio PrincipatoLuigi TranchinaTana LD'errico FMaria Braisubject
Settore ING-IND/20 - Misure E Strumentazione NucleariESR EPR Alanine Low-energy X-rays LAXSettore FIS/01 - Fisica SperimentaleSettore FIS/03 - Fisica Della MateriaSettore FIS/07 - Fisica Applicata(Beni Culturali Ambientali Biol.e Medicin)description
The aminoacid L-a-alanine has attracted considerable interest for use in radiation ESR dosimetry and has been formally accepted as a secondary standard for high-dose (kGy) and transfer dosimetry . The accuracy of the method is quite high, largely due to the low dependence of the alanine response on various irradiation parameters (photon energies above 100 keV, dose rate, temperature, etc.). Furthermore, this system presents alinear response to dose, fairly high sensitivity, tissue equivalence, absence of fading, small dimensions, ruggedn ess, and non-destructive readout. In this work, we examined the energy dependence of alanine ESR dosimeters in the low energy X-photon energy range between 1 keV and 40 keV, which was not previously described. Furthermore, we analyzed the response enhancement of alanine loaded with gadolinium oxide. The ESR measurements were complemented by the information provided by a reference ionization chamber and a by semiconductor detection systems.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 |