6533b7d7fe1ef96bd1268e99
RESEARCH PRODUCT
ESR response to gamma-rays of alanine pellets containing B(OH)3 or Gd2O3.
Maria Cristina D'ocaMaria BraiMaurizio MarraleG. GennaroAntonio Bartolottasubject
AlanineHigh atomic numberRadiationAlanineGadoliniumRadiochemistryPelletsElectron Spin Resonance Spectroscopychemistry.chemical_elementGadoliniumESR; Alanine; B(OH)3; Gd2O3; Sensitivity; Mass energy absorption coefficientMass energy absorption coefficientSensitivitychemistryBoric AcidsIsotopesGd2O3Gamma RaysYield (chemistry)RadiometryB(OH)3ESRBorondescription
ESR response to gamma-irradiation (1-50 Gy) of blends containing alanine and either B(OH)(3) or Gd(2)O(3) is reported. The sensitivity of the alanine--B(OH)(3) blend is comparable to the sensitivity of pure alanine, although its lowest detectable dose, LDD, is smaller ( approximately 1.3 Gy) than that of pure alanine ( approximately 2.9 Gy). Alanine with Gd(2)O(3) is about two times more sensitive than pure alanine, and its LDD is 0.8 Gy. The better sensitivity and LDD are probably due to the high atomic number (Z=64) of gadolinium, which enhances the interaction probability with photons and, consequently, the radical yield. This study suggests that other high-Z atoms may be useful for increasing the sensitivity of the response of alanine to gamma-radiation.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2007-01-01 | Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine |