Response of an FBX dosimeter to high LET 7Li and 12C ions

Dosimetric proprieties of FBX dosimeter for high energy photon and electron beams

“…The dosimeter demonstrated a reproducible linear dose response up to 5 Gy, which is suitable for many therapeutic applications. The linear interval tested is consistent with the results cited in the literature [4,11]. No significant (less than 1%) dose rate or energy dependence for this dosimeter was observed over the range studied.…”

“…Previous studies have shown an effect of 2% [15]. The radiation chemical yield G(Fe +3 ) of FBX dosimeter was found to be 55.96 (± 0.40) × 10 −7 mol J −1 , which is consistent with the observations of [11,12]. The results tabulated in Table 1 showed that reproducibility of the FBX measurements is less than 0.3%.…”

“…The correlation coefficient R 2 was 0.9996 which showed an excellent linear fit for the dose range of interest. The linear interval tested is consistent with the results cited in the literature [4,11] and is adequate for radiotherapy purposes. The radiation chemical yield G(Fe +3 ) value, which is a product of this slope and the molar extinction coefficient, ε, was evaluated and found to be 55.96 (± 0.40) × 10 −7 mol J −1 .…”

“…The error given is the combined uncertainty (1σ) calculated according to the International Organization for Standardization Guide of uncertainties in Table 3 [10]. The G value obtained in the present investigation is comparable within experimental errors with previously reported value [11,12]. Dose rate dependence Figure 5 shows the relative response of FBX dosimeter normalized to the mean as a function of dose rate.…”

6 MV wedge photon beam profiles with the fricke xylenol gel dosimeter

“…The natural oxidation of Fe +2 ions can be divided in natural and ionization radiation, the natural consideration aspects as: temperature variation, light intensity and influence with air [11,[21][22][23]. Both oxidations increases with the time, consequently the absorbance values also increase.…”